eISSN 2522-2260 pISSN 2522-2252 Department of Quantitative Methods, School of Business and Economics (SBE), University of Management http://esjindex.org/search.php?id=3192
eISSN 2521-1234 Profi.Net.Ua Group; Department of Informatics and Cybernetics; Melitopol Bohdan Khmelnytsky State Pe http://esjindex.org/search.php?id=3203