00503naa#a2200205#i#450# EN\\bibl\74251 20241201234714.7 2413-046X 20170625b2017####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2017 0 с. Journal article local . 332:142.4:504 ENG Murasheva A. A. Mazepo A. A. Lepehin P. P. e-integral.ru