%0 Journal Article %A L. G. Kurakin %A I. V. Ostrovskaya %T On the Stability of Thomson's Vortex $N$-gon and a Vortex Tripole/Quadrupole in Geostrophic Models of Bessel Vortices and in a Two-Layer Rotating Fluid: a Review %J Russian journal of nonlinear dynamics %D 2019 %P 533-542 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2019_15_4_a12/ %G en %F ND_2019_15_4_a12