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@article{DAN_1980_253_6_a6, author = {A. A. Novruzov and I. T. Mamedov}, title = {On $R$-identity of second-order elliptic and parabolic operators}, journal = {Doklady Akademii Nauk}, pages = {1314--1317}, publisher = {mathdoc}, volume = {253}, number = {6}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_6_a6/} }
A. A. Novruzov; I. T. Mamedov. On $R$-identity of second-order elliptic and parabolic operators. Doklady Akademii Nauk, Tome 253 (1980) no. 6, pp. 1314-1317. http://geodesic.mathdoc.fr/item/DAN_1980_253_6_a6/