TY - JOUR AU - E. I. Shulman TI - On the integrability of equations of Davey--Stewartson type JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1983 SP - 131 EP - 136 VL - 56 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1983_56_1_a12/ LA - ru ID - TMF_1983_56_1_a12 ER -