00601naa#a2200181#i#4500001002200000005001700022011001400039100004100053102000700094200007500101210005100176215001000227608002700237675010000264700001700364700002200381856001600403EN\INFRA-M\bibl\4122920240419071357.5##a2500-0489##a20210125b2021####ek#y0engy0150####ca##aRU1#aAnalogues of hyperboloids in four–dimensional spaceeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2021##a3 с.##aJournal article2local##aОбщие вопросы математических и естественных наук. 50#1aVavanovgD. #1aIvaschenkogA. V.4#ariorpub.com