00491naa#a2200169#i#450# EN\INFRA-M\bibl\10621 20251223023540.2 2587-9111 20160218b2016####ek#y0engy0150####ca RUS RU Research on Formation of Kondratiev Сycles in Canadian Economy Journal article Moscow INFRA-M Academic Publishing LLC. 2016 6 с. Journal article local Shishkin Andrey N. naukaru.ru