@article{INTF_1988_30_a0,
     author = {Yu. V. Egorov and M. A. Shubin},
     title = {Linear partial differential equations. {Foundations} of the classical theory},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya },
     pages = {5--255},
     publisher = {mathdoc},
     volume = {30},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1988_30_a0/}
}