@article{VUU_2023_33_2_a8,
     author = {A. K. Urinov and D. A. Usmonov},
     title = {On one problem for a fourth-order mixed-type equation that degenerates inside and on the boundary of a domain},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {312--328},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2023_33_2_a8/}
}