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What is "Diamond" open access in BibCnrs?

What does the “Diamond” logo in BibCnrs mean?

The blue diamond logo in BibCNRS indicates content published according to the “Diamond”open access model.

Diamond Open Access is a business model for Open Access (OA) scientific publishing.

Diamond Open Access scientific publishing is based on four main principles :

  1. Publication is free for authors
  2. Consultation is free for reader
  3. Submissions are peer-reviewed
  4. Authors retain copyright over their work

A growing number of institutions and organisations are promoting this model, which is largely based on academic grants. The CNRS is one of the supporters of this model.


Why a “Diamond” logo in BibCnrs? 

The “Diamond” model is mentioned by name in the CNRS open science policy as one of the levers for sustainable open science that guarantees bibliodiversity.

The addition of the “Diamond” logo in BibCNRS contributes to this approach and aims to make this publishing model better known and to highlight the publications that use it.

The blue “Diamond” logo complements the orange “OA” logo already present in BibCNRS, which indicates open access publications of all models (Green Open Access, Gold Open Access)

It should be noted that the referencing of “Diamond” content via this logo is an experimental service. For the time being, it is only carried out on the basis of data produced by the DOAJ.

What is the Click & Read extension?

Click & Read is a complementary access mode to the BibCnrs portal.

It is a unified browser extension developed by the Inist-CNRS allowing direct access to the full text of the Unpaywall (including HAL), ISTEX, Panist and BibCnrs platforms.

There is no search interface.

When browsing the Internet:

  • whatever the site (Google, Google Scholar, publisher sites…)
  • whatever the query (article title, authors, DOI…)
  • the Click & Read extension read the page and search of DOI, PMID, PII document identifiers
  • then searches for the document in the Unpaywall, ISTEX, Panist and BibCnrs collections.

The Click & Read button appears when the full text is available. Just click on the button to access it.


How to install the Click & Read extension?

A unique URL


In the specific page of the extension on your browser, click again on Add and then accept the installation options.

Don’t worry about the automatic security message. In order to work, the Click & Read extension must access all pages and scan them. The Click & Read extension code is not malicious and only accesses resource credentials, it has been verified at the time of publication for distribution via the various browser stores.

Open, in parallel with the installation of the C&R logo in your browser bar, the settings page:

  • Choose your institution. If it does not appear in the list click on Other
  • Check if you are a BibCnrs user and choose your BibCnrs domain(s)
  • Click on Activate if you want to set up the libraries linked to Click & Read in Google Scholar (depending on your rights: Istex and/or BibCnrs)
  • Save your settings (you can change them at any time by clicking on the C&R icon in your browser bar)
  • After saving, close the window and browse the Internet as usual and when a link to the full text is available the Click & Read logo will appear.


Who are the beneficiaries of Click & Read?

Developed by the Inist-CNRS for the CNRS research communities, Click & Read is primarily intended for research staff of CNRS units.

But it can be used by all ESR researchers, subject to access rights:
– The resources via Unpaywall are free. There are no access rights.
– Istex resources have been acquired for all ESR institutions.
– The Panist resources have been acquired for the ESR institutions that are members of the order groups.
– BibCnrs resources are acquired for the research communities of the CNRS. Your access rights are the same as for BibCnrs. In case of doubt, your authorized domain(s) is/are visible after Janus connection to BibCnrs by passing the mouse over your name in the upper right corner of the BibCnrs home page.

I am in a mixed unit: which institution should I choose on the Click & Read settings page?

Choose your home institution.


My establishment does not appear in the Click & Read list “Choose your establishment”?

No problem! If your institution does not appear in the list, click on Other.

This list is only used to limit the requests to Panist to the rightful owners. If you are a Panist beneficiary and there is an inconsistency in this list, please contact us


Does my choice of institution affect my access via Click & Read?

Yes and No. All ESR institutions are entitled to ISTEX resources. However, only member institutions are entitled to Panist resources. Hence the list of institutions in order to optimize Click & Read and to launch only the requests to Panist for the rightful owners.


Why is it necessary to allow “access to your data for all websites” during the Click & Read installation?

This is a standard message from browsers that must be accepted in order for the Click & Read extension to work regardless of the site visited.


What information is logged and stored by Click & Read?

The Click & Read extension does not store any personal information.

The information collected when using Click & Read are: the source consulted (Unpaywall, Istex, Panist or BibCnrs), the URL and DOI of the document consulted, the code of the institution and the BibCnrs domain indicated by the user and the time of connection. This information is only used to measure usage in order to know how the service is used.


Is Click & Read available on all browsers?

Click & Read has been developed for Firefox, Google Chrome and Safari browsers (from version 14). It can be used by other browsers based on a version derived from Chrome such as Chromium or Edge (from version 2021).


Once Click & Read is installed, should I keep the Istex, Panist and BibCnrs extensions?

The Click & Read extension takes over the functionality of the Istex and Panist extensions. You must uninstall them.

The operation of the extension BibCnrs Url Transformer is different. You can if you wish keep both extensions.


Is there an order among the sources requested through Click & Read?

Yes, Click & Read is part of the CNRS open science roadmap and favors open access and then virtuous access outside the publisher’s site, i.e. a priority query of Unpawall, then ISTEX, then Panist and finally BibCnrs.

It is not possible, at this time, to choose the order of the queried sources (e.g. between a free or a publisher version of a document).


How do I set up Click & Read in Google Scholar?

When you install Click & Read, it is possible to automatically add the Istex and BibCnrs Click & Read libraries (depending on your area(s) of law) to Google Scholar. Thus, in addition to the ID search function, Google Scholar will display a Click & Read link for any document in the Istex and BibCnrs repositories.

If you did not make this setting when you installed the extension, you can select it by opening the option page again by clicking on the extension in your browser bar.


I have Click & Read enabled for Google Scholar but I don’t see the libraries?

It is only possible to select up to 5 libraries in Google Scholar (Open the Google Scholar menu on the left, Settings, Links to libraries).



What is BibCnrs?

BibCnrs is a portal which gives access to the CNRS documentary resources. This portal provides access for researchers and other personnel from CNRS units to a negotiated range of journals, books and databases along with qualified open access.


BibCnrs can only be consulted on recent versions of Firefox and Google Chrome using a PC, Mac or tablet.


To access the portal:


BibCnrs is in French and English: on the homepage, click at the top right on (Français/English).

Who can benefit from BibCnrs?

Access to the resources available on BibCnrs is reserved for researchers working in CNRS laboratories (whether paid by the CNRS or other organizations) as well to doctoral students and post-doctoral researchers in the same laboratories.

The CNRS Labintel directory is the reference document for information on rights holders. The quantity of researchers is declared to the publishers concerned and is the basis for the cost of access to resources.

Some interdisciplinary research projects have broader documentation requirements than a scientific field’s strict framework. However, since the cost of subscriptions set by publishers is based on the number of accesses authorized, for budgetary reasons the CNRS cannot open all subscriptions in all scientific fields to all its units and research communities.

Without being connected to the BibCnrs portal, you can access open access journals, databases and research data

How do I sign in to BibCnrs?

You mainly sign in using the login/password Janus.

This login/password can notably be used to sign into the following CNRS applications – Core, Simbad, Agate, Sirhus, Labintel, etc.


If you do not have a login/password yet, request a Janus account 


  • Select your CNRS status and enter the Janus ID (email address) for which you are requesting a password reset. You must also check the security box “I am not a robot”.
  • An e-mail will then be sent to your address with a link to modify your password which is valid for an limited period of time.


In the event of problems with Safari, please use Firefox or Chrome. If the problem persists, log in with your old portal access code ” via your old portal access code ” and contact us.


If you do not yet have a Janus account or if the Janus service is unavailable, you can still use your old portal access code temporarily.


Please note: If you see a blue bar which either scrolls or is fixed, please activate the JavaScript plugin in your browser to allow access to the search screen and also contact us.


PDF Documentation – English version in progress

What is my profile?

Each user connected with his Janus account :


  • has a personal profile allowing him to see his favourite domain if he has rights to several domains as well as the licences taken out by the CNRS with publishers for the resources of your domain(s).
  • See their favourite resources as well as their personal resources.



Favourite resources are articles, journals, books, databases and platforms pinned by the user via BibCnrs.

Personal resources are resources entered by the user outside BibCnrs.


To enter a Personal Resource, click on the +

then in the “Title” field, enter the name of the resource and in the “Url” field, enter the url address preceded by https and click on “Validate”.

How should I search for an article?

By default, you are recognised on the main domain of your unit.
If you have rights to several domains, click on the domain in which you wish to search.

By default, you are positioned on the tab “Article”. You can search for articles, book chapters, DOIs, authors, title abstract words, ISSN, ISBN.


The implicit Boolean operator between different words in a search is: AND.

The searchable reference pool (Ebsco Discovery Service) contains several hundred million bibliographic references from publishers and content providers. New content is added daily.


The search tool will by default suggest references with full text. To refine the results, you can use the filters on the left of the screen: open access, HAL …


Open Access Filter :

HAL filter :

To view the detailed record, click on the chevron to the right of the article title.


To access the document, click on the title of the article.


If you cannot find an article, we invite you to search directly by the title of the journal by selecting the tab “a journal, a work” to access the publisher’s site.


Records can be exported in RIS (Research Information Systems) and BIBTEX format. From the list of results, please select the records you wish to export and then click on the button on the right of the search bar “Export selection”.



How can I directly write a research equation?

The implicit Boolean operator between different words in a search is AND. The available Boolean operators are OR, NOT and AND.


Truncation can be used with the star * character. If this is added at the end of a word or after the first letters of a word, it enables a search to be run on works “which begin with…” or “which finish with…” It can be particularly useful for searching for the singular and plural forms of words.

Example: Book* searches for book, books, etc.


To write a search equation, enter in the search bar the syntax you want: {field} : {word to search}


  • TX: search in the whole bibliographic record
  • AU: search one or more words in the Author field
  • TI: search one or more words in the article TI
  • AB: search in the abstract
  • ISSN ISBN: search in whole bibliographic record while deleting hyphens
  • LA: search in the language field
  • SU: search one or more words in the keyword field


How should I search for a journal or e-book title?

By default, you are recognized in your unit’s main disciplinary field.


If you are entitled to more than one domain, select the domain in which you wish to search.

Select the “A journal, a book tab and enter the term(s) of the journal or book title you want.

You can also use the A to Z search.


To refine the  results, you can use the filters on the left of the screen.


To view the detailed record, click on the chevron to the right of the journal or book title.

To add a journal or book title to your favourite resources, click on the pin icon

How should I search on a database or publisher's platform?

Without being logged in and by clicking on the “Database” tab, you have access to all the databases in Open Access.


After logging in, you will have access to all databases specific to the main domain to which your unit belongs.

If you have rights to several domains, select the domain in which you wish to search.


By checking , you only have the databases in Open Access.


Select the “A database” tab and click on the database you are interested in. To add a database to your favourite resources, click on the pin


Which resources are common to all disciplines?

You can consult the list of electronic resources available for each BibCnrs domain in the TOOLS section on the portal homepage.



A systematic search on Unpaywall and Ebsco’s full Open Access databases is enabled by HAL when users make a query via the “an article” tab and gives the priority to open access articles which are flagged with this pictogram


The integration of a “Open Access search facet enables users to only display open access resources.

It is also possible to only obtain articles present in HAL by using the HAL filter in the “Content Provider” section.




These multidisciplinary resources, acquired for all CNRS research communities, form common foundations shared by the 10 disciplinary fields of the CNRS scientific institutes. They cover all the CNRS’s major scientific fields.





Digital resources specific to each scientific community are acquired by the CNRS as well as by the CNRS Institutes according to the Institute’s disciplinary field:

  • INSB (Biological Sciences)
  • INC (Chemistry)
  • INEE (Ecology & Environment)
  • INSHS Humanities & Social Sciences)
  • IN2P3 (Nuclear & Particle Physics)
  • INP (Physics)
  • INS2I (Information Sciences)
  • INSU (Earth Sciences & Astronomy)
  • INSIS (Engineering & Systems)
  • INSMI (Mathematics)


Specific theme-based resources are negotiated and integrated for the majority of the disciplinary fields.


The Inist-CNRS consults with the CNRS institutes to mediate and negotiate the acquisition of theme-based resources – journals, digital books or databases.


    • CSD


Database in crystallography – Cambridge Structural Database published by the Cambridge Crystallographic Data Centre (CCDC). It includes over 850,000 crystallographic structures of organic and organometallic compounds and the CCDC’s existing modelling applications.

Available for all CNRS laboratories who request access. Please contact us


  • ISTEX resources –National Licences 


ISTEX offers the entire French higher education and research community access to more than 25,6 million articles from all scientific disciplines and cover a very long period (from 1400 to 2015).

Istex is the result of a partnership between CNRS, ABES, the Couperin consortium and the Université de Lorraine.

According to the contracts covering these resources, access to the full text is either via the publishers’ sites or the ISTEX platform.

For more information, please visit ISTEX

Agreements with publishers

Licenses from publishers and resource providers give authorized users the right to search for, make queries about, print and download articles for their own personal use or for study and research purposes.


However, downloading or storing whole or systematic journals is strictly prohibited. Similarly, any redistribution and commercial use of resources is prohibited.


In the event of repeated systematic downloads which are too close together in time, users may have their access to resources suspended.

What is the position of BibCnrs in open science?

In accordance with the CNRS open science roadmap, BibCnrs has evolved in 2020 to integrate more open resources.
Article research is done primarily on open resources: Unpaywall and open resources included in the discovery tool of the company Ebsco Information Services (including HAL, DOAJ …). An OA tag marks the search results from open sources and a filter on the left allows to limit the display of open results.
Free databases, marked by the OA tag, complete the platforms available via the Database search.

More about Istex?

Istex is an archive of more than 23 million scientific articles and monographs accessible to the whole of the ESR. It is a complement to the current subscriptions of the BibCnrs portal. The resources acquired within the framework of the ISTEX program are covered by BibCnrs and are available during an Article or Journal search.

More about Panist?

A permanent access platform, sponsored by the Couperin Consortium, which offers rightful claimants in the ESR the guarantee of access to the content subscribed to in the contracts, regardless of the evolution of the markets with the publishers. More than 7 million articles from the publisher Elsevier are available from 2002 to 2018. These resources are covered by BibCnrs via the current subscription to the Elsevier Freedom collection.

More about Unpaywall?

Open database of over 28 million free scientific articles from the Our Research project, a non-profit organization that creates tools to make academic research more open.
The Unpaywall collection is notably queried during an Article search in BibCnrs.

How can I stay informed about BibCnrs changes and content?

On the BibCnrs home page click on  which enables you to access:

  • general BibCnrs news or specific news for your disciplinary field
  • tests of common resources or specific resources for your disciplinary field


Mailing lists

Each discipline has its own mailing list. Subscriptions to the mailing lists are reserved for BibCnrs rights holders.

To subscribe and receive information about a given discipline (new resources, new services, changes, training offers, etc.) please go to the page for your discipline and click on “Mailing list” at the bottom of the page.


To subscribe to the mailing list for Biology: :

To subscribe to the mailing list for Chemistry:

To subscribe to the mailing list for Ecology & Environment :

To subscribe to the mailing list for Humanities and Social Sciences: :

To subscribe to the mailing list for Engineering and Systems:

To subscribe to the mailing list for Mathematics:

To subscribe to the mailing list for Nuclear & Particle Physics:

To subscribe to the mailing list for Physics:

To subscribe to the mailing list for Information Sciences:

To subscribe to the mailing list for Earth Sciences & Astronomy:

For all other questions

If you have any questions, please do not hesitate to contact our technical support team

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