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@article{FAA_1978_12_2_a1, author = {I. M. Gel'fand and L. A. Dikii}, title = {The calculus of jets and nonlinear {Hamiltonian} systems}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {8--23}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1978_12_2_a1/} }
I. M. Gel'fand; L. A. Dikii. The calculus of jets and nonlinear Hamiltonian systems. Funkcionalʹnyj analiz i ego priloženiâ, Tome 12 (1978) no. 2, pp. 8-23. http://geodesic.mathdoc.fr/item/FAA_1978_12_2_a1/