@article{TM_1994_205_a9,
     author = {O. E. Orel},
     title = {Investigation of a~neighborhood of a~degenerate one-dimensional orbit of the {Poisson} action of $\mathbb R^2$ in $M^4$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {113--130},
     publisher = {mathdoc},
     volume = {205},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1994_205_a9/}
}