00466naa#a2200193#i#450# EN\\bibl\74246 20251210210916.3 2413-046X 20170625b2017####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2017 0 с. Journal article local . 332:631 ENG Papaskiri T. V. Yun'lun Pen e-integral.ru