@article{DE_1983_19_7_a4,
     author = {W. Weinelt and R. D. Lazarev and V. L. Makarov},
     title = {Convergence of difference schemes for elliptic equations with mixed derivatives and generalized solutions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1140--1145},
     publisher = {mathdoc},
     volume = {19},
     number = {7},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_7_a4/}
}