00550naa#a2200181#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200010800109210005100217215001000268608001900278675003400297700002100331856001600352EN\INFRA-M\bibl\2360120210416203513.5##a2308-4898##a20181114b2018####ek#y0engy0150####ca0#aRUS##aRU1#aSynthesis of Equations For Ruled Surfaces With Two Curvilinear And One Rectangular DirectrixeseArticle1#aMoscowcINFRA-M Academic Publishing LLC.d2018##a9 с.##aArticle2local##aМатематика. 51zRUS#1aKokarevagYa. A.4#ariorpub.com