00495naa#a2200169#i#450# EN\INFRA-M\bibl\10833 20240508150355.3 2308-4898 20160317b2016####ek#y0engy0150####ca RUS RU Properties of Dupin Cyclide and Their Application. Part 4: Applications Journal article Moscow INFRA-M Academic Publishing LLC. 2016 12 с. Journal article local Sal'kov N. A. naukaru.ru