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
"Petrosyan, Arshak and Shahgholian, Henrik and Uralʹt︠s︡eva, N. N. (Nina Nikolaevna)",Regularity of free boundaries in obstacle-type problems,,American Mathematical Society,2012,Graduate studies in mathematics,,9780821887943,,https://cir.nii.ac.jp/crid/1130000797797689216