Scopus
The Scopus database is positioned by Elsevier Publishing Corporation as the world's largest universal abstract database with the ability to track the scientific citation of publicationsLink
The Scopus database is positioned by Elsevier Publishing Corporation as the world's largest universal abstract database with the ability to track the scientific citation of publicationsLink
National Library of Ukraine Vernadsky -biggest Library of Ukraine, Chief Scientific Information Center of State. Ranked among the top ten national libraries of the world.Link
MathSciNet is a searchable online bibliographic database created by the American Mathematical Society in 1996.[1] It contains all of the contents of the journal Mathematical Reviews (MR) since 1940 along with an extensive author database, links to other MR entries, citations, full journal entries, and links to original articles.[2][3] It contains almost 3 million items and over 1.7 million links to original articles.[4]
Along with its parent publication Mathematical Reviews, MathSciNet has become an essential tool for researchers in the mathematical sciences.[5][6] Access to the database is by subscription only and is not generally available to individual researchers who are not affiliated with a larger subscribing institution.[4]
For the first 40 years of its existence, traditional typesetting was used to produce the Mathematical Reviews journal. Starting in 1980 bibliographic information and the reviews themselves were produced in both print and electronic form. This formed the basis of the first purely electronic version called MathFile launched in 1982. Further enhancements were added over the next 18 years and the current version known as MathSciNet went online in 1996.[7]
Unlike most other abstracting databases, MathSciNet takes care to identify authors properly.[1] Its author search allows the user to find publications associated with a given author record, even if multiple authors have exactly the same name or if the same person publishes under multiple names or name variants. Mathematical Reviews personnel will sometimes even contact authors to ensure that MathSciNet has correctly attributed their papers.Link
Bibliometrics of Ukrainian science is an information-analytical system. Designed to provide society with a holistic picture of the state of science in Ukraine based on the consolidated data of scientometric platforms Google Scholar and ScopusLink
The Zentralblatt MATH service was organized in 1931 by Otto Neugebauer. Managed by Zentralblatt MATH European Mathematical Society, Specialized Information Center FIZ Karlsruhe (Karlsruhe, Germany) and Heidelberg Academy of Sciences. For the last 30 years, the editor-in-chief is Professor of the University of Berlin Bernd Wegner.Link
The name Scilit uses components of the words “scientific” and “literature”. This database of scholarly works is developed and maintained by the open access publisher MDPI.
Scilit is a comprehensive, free database for scientists using a new method to collate data and indexing scientific material. Our crawlers extract the latest data from CrossRef and PubMed on a daily basis. This means that newly published articles are added to Scilit immediately.Link
Bielefeld Academic Search Engine (BASE) - search engine (Germany), which is one of the most powerful suppliers of actual data on the scientific publications of European scientists.Link
Ulrich's Periodicals Directory - subscription catalog of American publishing Bowker, is the largest database that describes the global flow of periodicals in all subject areas.Link
WorldCat - the world's largest bibliographic database, with over 240 million records of all kinds of products for 470 languages. Base is created by joint efforts of more than 72 thousand libraries in 170 countries across the organization Online Computer Library Center.Link
The Directory of Open Access Journals (DOAJ) is a website that lists open access journals and is maintained by Infrastructure Services for Open Access (IS4OA). The project defines open access journals as scientific and scholarly journals that meet high quality standards by exercising peer review or editorial quality control and "use a funding model that does not charge readers or their institutions for access." The Budapest Open Access Initiative's definition of open access is used to define required rights given to users, for the journal to be included in the DOAJ, as the rights to "read, download, copy, distribute, print, search, or link to the full texts of these articles". The aim of DOAJ is to "increase the visibility and ease of use of open access scientific and scholarly journals thereby promoting their increased usage and impact."Link