%0 Journal Article %A É. B. Bykhovskii %T A~boundary value problem for a~quasilinear equation of first order with arbitrary dependence of the direction of the characteristics at the boundary on the unknown function %J Izvestiya. Mathematics %D 1977 %P 397-416 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1977_11_2_a10/ %G en %F IM2_1977_11_2_a10