TY - JOUR AU - A. V. Tsiganov TI - Degenerate integrable systems on the plane with a cubic integral of motion JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2000 SP - 426 EP - 444 VL - 124 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2000_124_3_a5/ LA - ru ID - TMF_2000_124_3_a5 ER -