00556naa#a2200181#i#450# EN\INFRA-M\bibl\9941 20250111131407.6 2587-9111 20151218b2015####ek#y0engy0150####ca RUS RU The Results of Studying Long Economic Waves in the Kingdom of Denmark Economy Journal article Moscow INFRA-M Academic Publishing LLC. 2015 5 с. Journal article local Averina Tatyana Nikolaevna Levkina Nataliya Nikolaevna zh-szf.ru