%0 Journal Article %A I. P. Martynov %A O. N. Parmanchuk %A V. M. Pecevich %T On a cross system of two differential equations %J Problemy fiziki, matematiki i tehniki %D 2013 %P 79-83 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2013_3_a12/ %G ru %F PFMT_2013_3_a12