TY - JOUR AU - S. Yu. Dobrokhotov TI - Reduction of Hugoniot--Maslov chains for trajectories of solitary vortices of the ``shallow water'' equations to the Hill equation JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1997 SP - 47 EP - 66 VL - 112 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1997_112_1_a1/ LA - ru ID - TMF_1997_112_1_a1 ER -