%0 Journal Article %A V. R. Fridlender %T Polynomial matrices and systems of partial differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1966 %P 118-123 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1966_5_a14/ %G ru %F IVM_1966_5_a14