00502naa#a2200193#i#450# EN\\bibl\74398 20241124233912.7 2413-046X 20171025b2017####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2017 0 с. Journal article local . 346.5:332.1 ENG Kulagina Evgeniya Viktorovna Smagulov Bolat Kudaybergenovich e-integral.ru