%0 Journal Article
%A I. P. Egorova
%T The problem with periodicity conditions for the equations of mixed type with characteristic degeneracy
%J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ
%D 2009
%P 15-27
%N 8
%U http://geodesic.mathdoc.fr/item/VSGU_2009_8_a1/
%G ru
%F VSGU_2009_8_a1