@article{RM_1993_48_6_a14,
     author = {O. E. Orel},
     title = {Topological analysis of a neighbourhood of a degenerate one-dimensional orbit of the {Poisson} action of $\mathbb R^2$ on the symplectic manifold $M^4$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {176--177},
     publisher = {mathdoc},
     volume = {48},
     number = {6},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_6_a14/}
}