Some of databases presented below may be accessible only through subscription.

•  Clarivate Analytics databases: Science Citation Index Expanded (Web of Science Core Collection);
• Dimensions
• EBSCO host: Academic Search Complete, Central & Eastern European Academic Source, Current Abstracts, GreenFILE, TOC Premier;
• Elsevier Bibliographic Databases: SCOPUS; INSPEC;
• Gale®: Academic OneFile, InfoTrac Custom;
• Google Scholar 
• MathSciNet®: Reference List Journal, Mathematical Reviews;
• Microsoft Academic
• MyScienceWork 
• OpenAIRE2020 (deposit publications) 
• ProQuest: ProQuest Central, Summon™ , Ulrichsweb™
• Scilit
• Zentralblatt MATH;

Every article published in this journal is assigned with Crossref DOI. Full metadata and open references registered in Crossref make research outputs easy to find, cite, link, and assess in any project world-wide. Further https://www.crossref.org/services/metadata-delivery/