@第{zbMATH05968174条，作者＝｛Buttazzo，Giuseppe｝，标题={谱优化问题}，FJournal={Revista Matem{\'a}tica Complutense}，日志={Rev.Mat.Complet.}，ISSN={1139-1138}，体积={24}，数字={2}，页码={277--322}，年份={2011}，语言={英语}，DOI={10.1007/s13163-011-0066-7}，关键词={49Q20,49R05,35P15,47A75,35J25}，zbMATH={5968174}，Zbl={1226.49038}}