Problems of Legality has been approved for the List of Print Professional Scientific Journals of Ukraine recomended for publication of dissertations results:

• in juridical sciences (approved date: 07.10.15)

Academic Search Complete is a full text database of EBSCO Information Services. The database coffers an enormous collection of the most valuable full-text journals, providing users access to critical information from many sources unique to this database. The database indexes more than 13,800 indexed and abstracted journals and offers full texts for more than 9,000 journals. As a leading scholarly database, it provides comprehensive content, including PDF backfiles to 1887 for most influent journals, and searchable cited references for more than 1,400 titles.
Indexed Issues: since 2013.

Central and Eastern European Online Library (CEEOL) is an online archive which provides access to full text PDF articles from 1.175 humanities and social science journals and re-digitized documents pertaining to Central, Eastern and South-Eastern European topics.
As leading Central and Eastern European online resource, CEEOL offers an outstanding portfolio of more than 100,000 articles of journals which are published by prestigious scholarly and independent institutions. Database titles cover the full spectrum of humanities and social studies, and include numerous titles placed at the top of their fields of Central and Eastern European studies.
Indexed Issues: since 2015.

Index Copernicus Journals Master List is a scientific journal database that contain currently over 13,000 journals from all over the world. This database covers all fields of science. Registered journals undergo rigorous, multidimensional evaluation, proving high quality. Appreciation to the IC Journals Master List expressed the Ministry of Science and Higher Education of Poland by placing the database of scientific journals IC Journals Master List to the list of databases for indexing in which, periodicals receive additional points in the evaluation conducted by the Ministry.
Indexed Issues: since 2014.

Российский индекс научного цитирования (RINC) is a research and information system accumulating over 6 million publications of Russian authors as well as information on quoting these publications from more than 3000 Russian and CIS journals. It is designed not only for operational support of research activities by up-to-date reference and bibliographic information but also it is a powerful tool allowing to assess the effectiveness and efficiency of research organizations, scholars, the level of academic journals, etc.
Indexed Issues: since 2011.

Bielefeld Academic Search Engine (BASE) is one of the world's most voluminous multi-disciplinary search engines especially for academic open access web resources. This engine collects, normalises, and indexes data using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). BASE provides more than 70 million documents from more than 3,000 sources. Where available, bibliographic data is provided, and the results may be sorted by multiple fields, such as by author, Dewey Decimal Classification or year of publication.

Citefactor is a service that provides access to quality controlled Open Access Journals and proceedings. Citefactor is world's largest indexing of scholarly journals & proceedings, which boost the worldwide visibility and accessibility of content. Over 3,000 institutes worldwide have full access to Citefactor. Citefactor users perform million searches every month across the globe.

Cosmos Impact Factor - offer academic database services to researcher; provide impact factor and index of academic journals, books and maintain academic database services to researchers, journal editors and publishers

Directory of Research Journals Indexing (DRJI) is a free online service that indexes open access research journals and provides own ranking of journals within DRJI database known as "DRJI Value." Also this product works as gateway sharing metadata of indexed articles with social networks, other indexing sources and electronic libraries.
The index of DRJI has about 50,000 articles from 2,300 journals published in 103 countries.

The Journals Impact Factor (JIF) provides a reflecting tools for ranking, categorizing, evaluating, and comparing various International/National Journals having ISSN published by Learning societies Universities and Institutions & Publication house. This factor is used for evaluating the prestige of journals. The evaluation is carried out by considering different the factors like Peer Review, Originality of Content, Technical editing quality, editorial quality and affiliation etc. Thus, the impact factor of a journal is calculated by dividing the number of current year citations to the source items published in that journal during the previous years. The impact factor is a very useful tool for evaluation of journals, but it must be used discreetly.

General Impact Factor (GIF) This database allows a researcher to identify which articles have been cited most frequently, who has cited them and find out the General Impact Factor (GIF). Publishes the annual Journal Reference Report which list an journal impact factor for each of the journals that it tracks.

Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Google Scholar index includes most peer-reviewed online journals of Europe and America's largest scholarly publishers. This product provides the citation indexing features. While Google does not publish the size of Google Scholar's index, third-party researchers estimated it to contain roughly 160 million documents.

MIAR - Information Matrix for the Analysis of Journals. MIAR collects data for the identification and the analysis of scientific journals . If you enter an ISSN in the searchbox , the system will check in which databases, those referred to in the matrix, the journal is indexed. The system holds more than 40,000 publications. It was founded in Barcelona (Spain).

Open Academic Journals Index (OAJI) is a full-text database of open-access scientific journals. Founder — International Network Center for Fundamental and Applied Research, Russian Federation. http://incfar.net The Center’s mission is the comprehensive study of man’s activity amid war and peace. http://incfar.net/about-us/our-mission.html Our mission lies in putting together an international platform for indexing open-access scientific journals. In a short-term perspective, we are considering calculating the journal Impact Factor. When it comes to calculating the impact factor, of great significance is how full the archive has gotten over the previous two years. For instance, the Impact Factor for 2012 is calculated based on the indicators for 2012—2013. For inclusion in the database of the journal should have own website with the full-text article submissions. Now submitted more than 2328 journals, 97 countries, about 100 000 articles. OAJI Library available on a database of the website. Link: http://oaji.net/library-oaji.html

Polska Bibliografia Naukowa (PBN) is a portal of the Polish Ministry of Science and Higher Education, collecting information on publications of Polish scientists and Polish and foreign scholarly journals. The project is co-financed by the European Union under the European Social Fund and is a part of POL-on - The System of Information on Higher Education. This resource indexes more than 560,000 works from 29,676 journals, and also has profiles for 6224 institutions and 27,000 persons.

ResearchBib - Academic Recource Index Academic Recource Index — the product of ResearchBib. ResearchBib is open access with high standard indexing database for researchers and publishers. Research Bib may freely index journals, research papers, call for papers, research position. Journal Indexing. ResearchBib tries to cover all open access scientific and scholarly journals freely. The ResearchBib Journal Database is the largest complete journal database available on the internet freely. Journal Database try to cover all open access scientific and scholarly journals that use an appropriate quality control system, and it will not be limited to particular languages or subject areas. The Journal Database contains 420,000+ journals from different publishers, which includes the title, abbreviation, journal host url, index, publisher, description (aims and scope), online ISSN and print ISSN etc.

Scientific Indexing Services (SIS) is the database that 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 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. Services: Journal Indexing Service; Conference Indexing Service; Report The Fake and Hijacked Journals; SIS Certifications; SIS Impact Factor; SIS Advertisement.

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

WorldCat is a global union catalog and the world's largest bibliographic database that itemizes the collections of 72,000 libraries in 170 countries that participate in the Online Computer Library Center (OCLC) global cooperative. It contains more than 330 million records, representing over 2 billion physical and digital assets (articles, archival materials, books, journals, maps, music, videos, and other resources) in 485 languages.

CyberLeninka — Scientific Electronic Library is open access (Open Access), whose main objectives is to promote science and research activities, public control of quality of scientific publications, the development of interdisciplinary research institute of modern scientific review and improvement of Russian science citation.

Scientific Periodicals of Ukraine (SPU VNLU) Producer: Vernadsky National Library of Ukraine Scientific Periodicals of Ukraine - project Vernadsky National Library of Ukraine (VNLU). Ukrainian scientific periodicals contain articles from international journals in all fields of knowledge and carries out the completion of full-text electronic information resources, electronic counterparts publications or electronic publications provided by the owners. As part of an information resource "Scientific Periodicals of Ukraine" is adjusted full-text search of scientific publications in PDF format. VNLU spent working on the integration of information resource "Scientific Periodicals of Ukraine" to the interface of analytical services, Google Scholar (Google Academy). It contains approximately 2520 - journals; 25372 - issues; 628524 - full texts of articles.