@article{RM_1975_30_1_a3,
     author = {A. M. Vinogradov and I. S. Krasil'shchik},
     title = {What is the hamiltonian formalism?},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {177--202},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1975_30_1_a3/}
}