Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Fichera, Gaetano","Linear elliptic differential systems and eigenvalue problems : the Johns Hopkins University, Baltimore Md, March-May 1965",,Springer-Verlag,1965,Lecture notes in mathematics,,,,https://cir.nii.ac.jp/crid/1130000794916660992