00538naa#a2200169#i#450# EN\\bibl\4246 20251223141000.2 2308-8877 20141113b2014####ek#y0engy0150####ca RUS RU The unsolved riddle of Selim Krein Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 1 с. Journal article local Kaplan A. anni.editorum.ru