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@article{DAN_1987_297_2_a3, author = {A. I. Vol'pert and V. A. Vol'pert}, title = {Construction of the rotation of the vector field for operators}, journal = {Doklady Akademii Nauk}, pages = {280--283}, publisher = {mathdoc}, volume = {297}, number = {2}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1987_297_2_a3/} }
A. I. Vol'pert; V. A. Vol'pert. Construction of the rotation of the vector field for operators. Doklady Akademii Nauk, Tome 297 (1987) no. 2, pp. 280-283. http://geodesic.mathdoc.fr/item/DAN_1987_297_2_a3/