@第{zbMATH03718097条，作者={Kretov，M.V.}，标题={仿射空间中椭球的复合体}，FJournal＝｛Differentsial'naya Geometriya Mnogoobrazi｛\u｛\i｝｝Figur｝，日志={Differ.Geom.Mnogoobr.Figur}，ISSN={0321-4796}，体积={10}，页码={41--47}，年份={1979}，语言={俄语}，关键词={53A15}，zbMATH={3718097}，Zbl={0458.53004}}