Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Schulz, Friedmar",Regularity theory for quasilinear elliptic systems and Monge-Ampère equations in two dimensions,,Springer-Verlag,1990,Lecture notes in mathematics,,"3540531033,0387531033",,https://cir.nii.ac.jp/crid/1130282270720421120