00528naa#a2200181#i#450# EN\INFRA-M\bibl\93857 /en/manage/index 20250523163400.5 2308-4898 20240927b2024####ek#y0engy0150####ca RU Classification of Ruled Surfaces Journal article Moscow INFRA-M Academic Publishing LLC. 2024 9 с. Journal article local Геометрия. 514 Sal'kov N. A. test.editorum.ru /en/manage/index