00504naa#a2200181#i#450# EN\INFRA-M\bibl\18193 20240424182800.3 2308-4898 20170928b2017####ek#y0engy0150####ca RUS RU Representations of Dupin Cyclides Journal article Moscow INFRA-M Academic Publishing LLC. 2017 13 с. Journal article local Математика. 51 RUS Sal'kov N. A. riorpub.com