@article{ZVMMF_1988_28_1_a19,
     author = {V. D. Valedinskii and A. B. Isakov},
     title = {On the difference analogue of the inequality $\|p\|_{L_2}\le C\|\operatorname{grad}p\|_{W_2^{-1}}$ in spherical coordinates},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {151--152},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1988_28_1_a19/}
}