00609naa#a2200169#i#450# EN\\bibl\132444 20260802054435.7 2221-3260 20260530b2026####ek#y0engy0150####ca RU Economic Efficiency of Implementing Blockchain Technologies for Accounting Professional Competencies in the Context of Additional Professional Education Journal article Yaroslavl Yaroslavl State Technical University 2026 12 с. Journal article local Schukina Alena Igorevna Modnov Sergey Ivanovich comincon.ru