TY - JOUR AU - K. M. Khanin TI - The existence of conditionally periodic motions for a~system of plane vortices JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1981 SP - 234 EP - 235 VL - 36 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1981_36_1_a10/ LA - en ID - RM_1981_36_1_a10 ER -