@article{DE_1982_18_10_a13,
     author = {Yu. B. Orochko},
     title = {The property of global finite rate of propagation of a second-order elliptic differential expression},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1764--1772},
     publisher = {mathdoc},
     volume = {18},
     number = {10},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_10_a13/}
}