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@article{DE_1998_34_10_a20, author = {O. M. Penkin}, title = {On the maximum principle for an elliptic equation on stratified sets}, journal = {Differencialʹnye uravneni\^a}, pages = {1433--1434}, publisher = {mathdoc}, volume = {34}, number = {10}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1998_34_10_a20/} }
O. M. Penkin. On the maximum principle for an elliptic equation on stratified sets. Differencialʹnye uravneniâ, Tome 34 (1998) no. 10, pp. 1433-1434. http://geodesic.mathdoc.fr/item/DE_1998_34_10_a20/