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DOI (Digital Object Identifier) is an international standard (ISO 26324:2012) of the identification of information, which is appropriated to scientific publications, such as: scientific articles, collections of scientific articles, summaries of conferences, reports of conferences, reviews of scientific articles, theses, applications for grants, patents, reports on scientific work, textbooks, scientific aids, monographs.  For scientific content DOI is assigned by the registration agency Crossref or with a sponsor organization. More information about DOI in the article (link).

The publishing house "Internauka" is the official partner (Sponsoring Member) of Crossref in Europe with the status of Sponsoring Member (statement from register Sponsoring member) and is authorized by administrative, financial, billing, technical issues to represent publishers in Publishers International Linking Association, Inc. (PILA)

 DOI Интернаука   Existence of the DOI identifier demonstrates high technological quality of the edition. It is recommended to assign DOI to all scientific publications. The relevance of the DOI assignment is especially important for journals included or planning to apply for inclusion in the VAK list (for Ukrainian scientific journals, the assignment of DOI to each article is mandatory, according to point 6 of the Procedure for Forming the List of Scientific Professional Publications of Ukraine (Order MES No. 32 of 15.01.2018). Also, the DOI is obligatory for the editions entering into the leading scientometric bases (Scopus, Web of Science).


The publishing house "Internauka" provides services for assigning an individual prefix DOI, which will be permanently assigned to the publishing house (publication, organization, university), entering the Crossref register and connecting to the crossref bibliographic reference system, as well as information support during the work in the Crossref system. 

The publishing house "Internauka" is one of the largest sponsoring organizations of Crossref and cooperates with more than 200 leading universities, scientific organizations and publications in Europe, such as:


Olexander Dovzhenko Hlukhiv National Pedagogical University (prefix DOI: 10.31376)


Ivano-Frankivsk National Technical University of Oil and Gas (prefix DOI: 10.31471)


Donetsk National Technical University (prefix DOI: 10.31474)


Mykolayiv National Agrarian University (prefix DOI: 10.31521)  


Berdiansk State Pedagogical University (prefix DOI: 10.31494)  


Bohdan Khmelnytsky National University Of Cherkasy (prefix DOI: 10.31651)


Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University (prefix DOI: 10.31652)


State university of telecommunications (prefix DOI: 10.31673)


Ukrainian Pulmonology Journal (prefix DOI: 10.31215)


Asthma and allergy (prefix DOI: 10.31655)


Cooperation procedure:

To start cooperation, it is necessary to issue the contract between the applicant organization and the Internaca Publishing House, which describing terms of cooperation and payment. The publishing house "Internauka" offers for publishers (editions, universities, scientific organizations)  two ways of cooperation on assignment of digital identifiers DOI.

The first option (without paying an annual fee).

The applicant organization is assigned with a unique DOI prefix. To assign DOI suffixes to the publisher (publication, scientific organization, university), it is necessary to post scientific material on its own website and send a link requesting DOI to the e-mail: with the notation "DOI assignment". Within 3-5 business days, an e-mail with information about the assigned DOI will be sent. Under the contract of the organization-applicant with the Publishing house "Internauka" the following payments are provided:

  • CrossRef is not charged for the connection of the Customer to the international system of bibliographic references.
  • The payment for registration of DOI digital identifiers is 6 US dollars / 155 hryvnas / 350 rubles for DOI. The payment must be made after the assignment of the DOI digital identifiers.

2nd option.

The applicant organization is assigned with a unique DOI prefix, and  provided with a login / password to access the system (personal cabinet) for registration of free 10 DOIs tests in the Crossref system, after testing and making a payment the applicant organization become a part of Crossref register. From this moment, you will be able to register DOI, view statistics, connect additional services (CrossMark, Similarity Check, Cited-by Linking) and work with them. It should be noted that it is very important to have your own DOI prefix, which belongs exactly to your publisher, organization or magazine, and not transfer the right to register to third parties. This can lead to the loss of affiliation with your magazine in case of a break in the relationship (the Register of Crossref members, who have their own prefix is ​​provided on the Crossref website by reference).

Under the contract of the organization-applicant with the Publishing house "Internauka" the following payments are provided:

  • Payment for the connection of the Customer to the international system of bibliographic references CrossRef. It is must be paid once a year, together with the signing of the contract or the extension of the contract in the amount of 240 US dollars / 6300,00 UAH / 12,000 rubles, which is a special price offer for European publishing houses. The price can be revised downwards after your request to the e-mail: Before payment, the customer is provided with a test period and the opportunity to register up to 10 DOI for free.
  • The price for the registration of DOI is 1 US $ per DOI. The publisher independently creates DOI suffixes and downloads them toghether with a metadata of articles into the Crossref system.

The prefix of DOI and identifiers belong to publishing house (edition)


Requirements for the materials to which the DOI is appropriated:

  • The registered data must have a URL page.
  • The URL page has to be available on a long-term basis.
  • The URL page has to be updated in case of it is  change.

Editions that cooperate with the Publishing House "Internaca" provided with step-by-step instructions for registering DOI. Also, we suggest that you review the translation of the webinar Crossref about the assignment of DOI.

To sign a contract and start cooperation, it is necessary to send a request to e-mail:  marked "Assignment of DOI" and add a contact information.


IMPORTANT: Because of a mass registration of scientific publications, DOI appeared a lot of scammers. We underline that for the scientific content DOI is assigned by the registration agency Crossref. The publisher may enter into a direct contract with Crossref or its sponsoring organization. The prefix of the publishing house, academic institution or university must be individual and affiliated with the institution, not sponsor or any other organization.