@article{IVM_2003_11_a4,
     author = {M. A. Malakhaltsev},
     title = {Infinitesimal deformations of a symplectic structure with singularities},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--50},
     publisher = {mathdoc},
     number = {11},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2003_11_a4/}
}