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@article{DE_1991_27_8_a12, author = {I. A. Kipriyanov and A. A. Kulikov}, title = {Fundamental solutions of $B$-hypo-elliptic equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1387--1395}, publisher = {mathdoc}, volume = {27}, number = {8}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_8_a12/} }
I. A. Kipriyanov; A. A. Kulikov. Fundamental solutions of $B$-hypo-elliptic equations. Differencialʹnye uravneniâ, Tome 27 (1991) no. 8, pp. 1387-1395. http://geodesic.mathdoc.fr/item/DE_1991_27_8_a12/