@article{DE_1998_34_8_a12,
     author = {O. M. Penkin and Yu. V. Pokorny},
     title = {On incompatible inequalities for elliptic equations on stratified sets},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1107--1113},
     publisher = {mathdoc},
     volume = {34},
     number = {8},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_8_a12/}
}