00557naa#a2200193#i#450# EN\INFRA-M\bibl\4647 20241001025740.2 1609-2163 20141008b2014####ek#y0engy0150####ca RUS RU New Method for Mechanical Work Registration of Isolated Non-Fixed Frog Heart Journal article Moscow INFRA-M Academic Publishing LLC. 2014 5 с. Journal article local Pravdivtsev V. Sosin D. Evseev A. zh-szf.ru