@article{TIMM_2014_20_1_a11,
     author = {A. L. Kazakov and P. A. Kuznetsov and L. F. Spevak},
     title = {On a~degenerate boundary value problem for the porous medium equation in spherical coordinates},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {119--129},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2014_20_1_a11/}
}