00581naa#a2200193#i#4500001002200000003001700022005001700039011001400056100004100070101000800111102000700119200008000126210005100206215001100257608002700268675003400295700001900329856003900348EN\INFRA-M\bibl\28045/en/manage/index20250411144108.5##a2308-4898##a20190408b2019####ek#y0engy0150####ca0#aRUS##aRU1#aGeneral Principles for Formation of Ruled Surfaces. Part 2eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2019##a13 с.##aJournal article2local##aМатематика. 51zRUS#1aSal'kovgN. A.4#atest.editorum.ruu/en/manage/index