00447naa#a2200181#i#450# EN\\bibl\85968 20241123211931.6 2658-3569 20181225b2018####ek#y0engy0150####ca ENG RU Journal article Moscow Electronic science 2018 0 с. Journal article local . 334.723+ 331.103.5 ENG Matveeva Alla Ivanovna qje.su