@article{SM_1991_69_1_a7,
     author = {S. M. Skryabin},
     title = {Classification of {Hamiltonian} forms over divided power algebras},
     journal = {Sbornik. Mathematics},
     pages = {121--141},
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1991_69_1_a7/}
}