@article{MZM_1989_45_3_a5,
     author = {M. V. Karasev},
     title = {Plane poisson manifolds and finite-dimensional pseudogroups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {53--65},
     year = {1989},
     volume = {45},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a5/}
}