%0 Journal Article %A Kh. A. Chikhanov %T The equation of mixed type with an arbitrary line of degeneracy %J Trudy seminara po kraevym zadačam %D 1967 %P 148-152 %V 4 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1967_4_4_a17/ %G ru %F KUKZ_1967_4_4_a17