%0 Journal Article
%A K. T. Karimov
%T Keldysh problem for a three-dimensional equation of mixed type with three singular coefficients in a semi-infinite parallelepiped
%J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki
%D 2020
%P 31-48
%V 30
%N 1
%U http://geodesic.mathdoc.fr/item/VUU_2020_30_1_a2/
%G ru
%F VUU_2020_30_1_a2