Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Egorov, I︠U︡. V. (I︠U︡riĭ Vladimirovich) and Shubin, M. A. (Mikhail Aleksandrovich) and Gindikin, Semen Grigorʹevich and Volevich, L. R. (Leonid Romanovich) and Landis, E. M. (Evgeniĭ Mikhaĭlovich) and Kondratʹev, V. A.",The Cauchy problem ; Qualitative theory of partial differential equations,,Springer-Verlag,1991,Encyclopaedia of mathematical sciences,,"0387520031,3540520031,9783642634901",,https://cir.nii.ac.jp/crid/1130000797836506112