00651naa#a2200217#i#450# EN\INFRA-M\bibl\6420 /en/manage/index 20250807233310.4 2306-174X 20150925b2015####ek#y0engy0150####ca RUS RU Entropy approach in the estimation of parameters of cardio schoolboys at latitudinal Journal article Moscow INFRA-M Academic Publishing LLC. 2015 8 с. Journal article local Yastrebov A. Gorbunov D. Elman Kseniya Gimadiev B. test.editorum.ru /en/manage/index