Plant varieties studying and protection has been registered by the State Registration Service of Ukraine as a countrywide print mass media.

Plant varieties studying and protection has been approved as a category B title of the List of Professional Scientific Journals of Ukraine recomended for publication of dissertations results:

• in biology
• in agricultural sciences

AGRIS is the service that connects you directly to a wealth of research and technical information on agriculture worldwide. AGRIS is the International System for Agricultural Science and Technology providing access to bibliographic information on agricultural science and technology. It offers more than 8,9 million links to information produced by more than 350 data providers (which include research centers, development programs, international and national organizations) from more than 140 countries. Since 1975, AGRIS is maintained by the Food and Agriculture Organization of the United Nations to serve users from developed and developing countries through facilitating access to available knowledge in agriculture, science and technology. AGRIS facilitates access to publications, journal articles, monographs, book chapters, and grey literature - including unpublished science and technical reports, theses, dissertations and conference papers. Most AGRIS records are indexed by AGROVOC (the FAO multilingual Thesaurus) and this enables similar content to be retrieved through Google Scholar and to interlink with other related resources on the web. While AGRIS is predominantly a bibliographic repository, if a link to the full text of the AGRIS resource is available online, this will accessible via the AGRIS portal. Currently about 1,8 million records have an access link to the full text. On average, some 400,000 agricultural and research professionals worldwide access AGRIS resources each month.

Archives: from 2005

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PubAg is the portal to USDA-authored and other highly relevant agricultural research.

PubAg covers all of the core topics of the agricultural sciences including nutrition, food safety, food quality, animal and crop production and protection, natural resources, sustainable agricultural systems, rural development, agricultural economic and policy issues, agricultural imports and exports, agricultural statistics, extramural research, and extension education.

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.

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.

Archives: from 2014

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Directory of Open Access Journals (DOAJ) is an online directory that indexes and provides access to high quality, open access, peer-reviewed journals covering all areas of science, technology, medicine, social science and humanities. This directory has index of about 2 million articles from more than 10,000 journals of open-access publishers from 134 countries.
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.

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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.

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OpenAIRE (Open Access Infrastructure for Research in Europe) is a project that supports the European Commission Open Access policy by providing an infrastructure for researchers to comply with the European Union Open Access mandate. This repository provides content across academic disciplines with over 11,5 million scientific publications, found in journal articles, dissertations, books, lectures, reports, etc., harvested regularly from more than 610 repositories, from 52 countries.

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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.

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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.

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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.

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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.

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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.

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Directory of Open Access scholarly Resources (ROAD) is a service offered by the ISSN International Centre with the support of the Communication and Information Sector of UNESCO. ROAD provides a free access to a subset of the ISSN Register (1,8 millions of bibliographic records. This subset comprises bibliographic records which describe scholarly resources in Open Access which have been assigned an ISSN by the ISSN Network : journals, conference proceedings and academic repositories. The bibliographic records are enriched, when appropriate, by metadata about the coverage of the resources by indexing, abstracting, citation databases, registries and journal indicators.

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PKP Index is the project of Public Knowledge Project (PKP). The PKP Index is a database of articles, books, and conference proceedings using PKP's free, open source Open Journal Systems, Open Monograph Press, and Open Conference Systems software applications. The PKP Index includes more than 322000 records indexed from 1000 publications. The Index covers all subject areas and includes content from publishers from around the world. To be accepted into the Index, your journal, press, or conference site must include at least one article, chapter, or proceeding. The index is a curated list of publications and all submissions are reviewed and approved by PKP staff. The PKP Index is powered by PKP's own Open Harvester Systems. Please use the link to register http://index.pkp.sfu.ca/index.php/user/register for an account.

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Elektronische Zeitschriftenbibliothek (The Electronic Journals Library) is a service to facilitate the use of scholarly journals on the internet. It offers a fast, structured and unified interface to access full-text articles online. It comprises more than 89900 titles from all areas of research, about 18300 of which are available online only. In addition, more than 104800 journals, which are provided by aggregators, are listed. The EZB contains 56743 journals which are accessible free of charge to anyone. Furthermore, the participating libraries provide their users access to the journals they subscribe to. The journals are presented in lists sorted by research area. An updated list is generated by the database according to the member library's specifications each time it is accessed. The Electronic Journals Library was founded in 1997 by the University Library of Regensburg in co-operation with the University Library of Technische Universität München.

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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

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Leipzig University Library (Bibliotheca Albertina) is the main university library in Leipzig, the central library of the humanities and the archival library of Leipzig University. It was founded in 1543 on the basis of collections of libraries of disbanded Catholic monasteries. The library has more than 5 million volumes and receives 7,200 journals

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