Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1980_251_3_a8, author = {G. A. Mirzoev}, title = {Quasiregular differential operators of fourth order}, journal = {Doklady Akademii Nauk}, pages = {550--553}, publisher = {mathdoc}, volume = {251}, number = {3}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_251_3_a8/} }
G. A. Mirzoev. Quasiregular differential operators of fourth order. Doklady Akademii Nauk, Tome 251 (1980) no. 3, pp. 550-553. http://geodesic.mathdoc.fr/item/DAN_1980_251_3_a8/