%0 Journal Article %A V. R. Petukhov %T Questions concerning the qualitative study of the solutions of equations with ``maxima'' %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1964 %P 116-119 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1964_3_a16/ %G ru %F IVM_1964_3_a16