著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Velichkov, Bozhidar",Existence and regularity results for some shape optimization problems,,Edizioni della Normale,2015,Tesi = theses,,9788876425264,,https://cir.nii.ac.jp/crid/1130282268796903040