
CrossRef is an association of publishers of scientific publications (magazines, monographs, collections of conferences materials), created to develop and support the world-wide high-tech infrastructure of scientific communications. The main task of CrossRef is to promote the widespread use of innovative technologies to accelerate and facilitate research. CrossRef focuses on issues of developing an electronic infrastructure for mutual citation of scientific publications. The CrossRef Association supports the common worldwide mutual citation service, which functions as a kind of gateway between e-publisher platforms. This service does not store full texts of scientific publications, but it retains information about the links between publications through the technology of Digital Object Identifier (CrossRef DOI), as well as the metadata of published scientific materials. Thanks to this system researchers can use the functionality of the global scientific-publishing environment level.
CrossRef members now are 5,000 publishers from all over the world. The CrossRef citations database covers more than 75 million journal articles and other types of scientific publications (monographs, data sets, dissertations, technical reports). (link).

Scientific Indexing Services (SIS) was founded by renowned scientists. A group of 70 scientist from various countries in different disciplines are started SIS with specific objective of providing quality information to the researcher. SIS offering academic database services to researcher. It’s mainly: citation indexing, analysis, and maintains citation databases covering thousands of academic journals, books, proceedings and any approved documents SIS maintains academic database services to researchers, journal editors and publishers. SIS focuses on: citation indexing, citation analysis, and maintains citation databases covering thousands of academic journals. SIS Provides Quantitative And Qualitative Tool For Ranking, Evaluating And Categorizing The Journals For Academic Evaluation And Excellence. This Factor Is Used For Evaluating The Prestige Of Journals. The Evaluation Is Carried Out By Considering The Factors Like Paper Originality, Citation, Editorial Quality, and Regularity & International Presence (link).

Vernadsky National Library of Ukraine (VNLU) — most on the volume of fund and by an area apartments library of Ukraine, main scientifically-informative center of the state. Included in the number of ten most national libraries of the world, is the base member of the European library (link).

Google Scholar – it is the searching system and noncommercial бібліометрична database, that indexes scientific publications and cites data about their quoting. (link).
Professional publications of Ukraine – (link).
Polish Scientific Bibliography (PBN) – (link).

Hull University Library – (link).

Leipzig University Library (UBL) – (link).

CORE – (link).

Open Ukrainian Citation Index (OUCI) – (link).
№ випуску | Дата подання матеріалів | Дата розміщення матеріалів |
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55 (2026) | 23.02.2026 | кінець березня 2026 |
56 (2026) | 25.04.2026 | Кінець травня 2026 |
57 (2026) | 25.06.2026 | Кінець липня 2026 |
58 (2026) | 25.08.2026 | Кінець вересня 2026 |
59 (2026) | 25.10.2026 | Кінець листопада 2026 |
60 (2026) | 25.12.2026 | Кінець січня 2027 |
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