%0 Journal Article %A Kudratillo S. Fayazov %A Yashin K. Khudayberganov %T Ill-posed boundary-value problem for a system of partial differential equations with two degenerate lines %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2019 %P 392-401 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2019_12_3_a13/ %G en %F JSFU_2019_12_3_a13