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@article{FAA_1987_21_3_a4, author = {O. I. Mokhov}, title = {Hamiltonian differential operators and contact geometry}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {53--60}, publisher = {mathdoc}, volume = {21}, number = {3}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1987_21_3_a4/} }
O. I. Mokhov. Hamiltonian differential operators and contact geometry. Funkcionalʹnyj analiz i ego priloženiâ, Tome 21 (1987) no. 3, pp. 53-60. http://geodesic.mathdoc.fr/item/FAA_1987_21_3_a4/