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@article{DE_1973_9_4_a20, author = {A. A. Kuleshov}, title = {Systems of pseudodifferential equations in $R^n$}, journal = {Differencialʹnye uravneni\^a}, pages = {747--750}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_4_a20/} }
A. A. Kuleshov. Systems of pseudodifferential equations in $R^n$. Differencialʹnye uravneniâ, Tome 9 (1973) no. 4, pp. 747-750. http://geodesic.mathdoc.fr/item/DE_1973_9_4_a20/