00609naa#a2200205#i#450# EN\\bibl\112467 20260120022522.2 2311-1402 20200625b2020####ek#y0engy0150####ca ENG RU SEASONAL MICROALTERNATIONS OF ECG SIGNAL IN STUDENTS OF A NOTHERN UNIVERSITY Journal article Nizhnevartovsk Nizhnevartovsk State University 2020 5 с. Journal article local . 612.017.2 (612.17) ENG Pogonysheva I A Lunyak I I Pogonyshev D A vestnik.nvsu.ru