@第{zbMATH00729256条，作者={Izumiya，Shyuichi和Kurokawa，Yasuhiro}，标题={在{Clairaut}类型}的系统上，FJournal={Kodai数学杂志}，期刊={Kodai Math.J.}，ISSN={0386-5991}，体积={17}，数字={3}，页码={636--643}，年份={1994}，语言={英语}，DOI={10.2996/kmj/1138040057}，关键词={34C40,37J35,37K10,34A25}，zbMATH＝{729256}，Zbl={0821.34049}}