%0 Journal Article %A G. F. Fedoroff %T Properties of second-order matrices and their application to the quadratures of certain systems of differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1958 %P 217-224 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1958_3_a27/ %G ru %F IVM_1958_3_a27