00552naa#a2200181#i#450# EN\INFRA-M\bibl\3598 20240917055926.2 1609-2163 20140905b2014####ek#y0engy0150####ca RUS RU Phase Portrait of Single-Channel Ecg in Asseessment of Functional Reserves of Cardiovascular System Journal article Moscow INFRA-M Academic Publishing LLC. 2014 5 с. Journal article local Minina E. Faynzilberg L. naukaru.ru