@article{ND_2006_2_1_a1,
     author = {M. A. Sokolovskiy and J. Verron},
     title = {Some properties of motion of $A+1$ vortices in a two-layer rotating fluid},
     journal = {Russian journal of nonlinear dynamics},
     pages = {27--54},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2006_2_1_a1/}
}