00495naa#a2200169#i#450# EN\\bibl\83956 20250103142946.5 2782-1927 20220925b2022####ek#y0engy0150####ca ENG RU Competition versus money: the digital rouble and Gresham’s law Journal article Yaroslavl Yaroslavl State Technical University 2022 7 с. Journal article local Yakovlev Aleksandr I comincon.ru