@article{INTO_2021_194_a5,
     author = {A. S. Berdyshev and A. Hasanov and A. Ryskan},
     title = {A boundary-value problem for a class of four-dimensional degenerate elliptic equations},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {55--70},
     publisher = {mathdoc},
     volume = {194},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2021_194_a5/}
}