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.

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.

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.

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.

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.