%0 Journal Article %A M. P. Kharlamov %T Critical subsystems of the Kowalevski gyrostat in two constant fields %J Russian journal of nonlinear dynamics %D 2007 %P 331-348 %V 3 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2007_3_3_a3/ %G ru %F ND_2007_3_3_a3