00540naa#a2200169#i#450# EN\\bibl\43875 20240503064902.5 2307-1400 20210505b2021####ek#y0engy0150####ca RU Mathematics as a scientific tool of government in the state Journal article Saint-Petersburg Strategy of the Future 2021 10 с. Journal article local Экономика. Экономические науки. 33 Rosenberg V. Ya. futurepubl.ru