%0 Journal Article %A A. K. Urinov %A D. A. Usmonov %T On one problem for a fourth-order mixed-type equation that degenerates inside and on the boundary of a domain %J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki %D 2023 %P 312-328 %V 33 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VUU_2023_33_2_a8/ %G ru %F VUU_2023_33_2_a8