TY - JOUR AU - Demontis, Francesco AU - der Mee, Cornelis van TI - Wave Operators for Defocusing Matrix Zakharov-Shabat Systems with Pnonvanishing at Infinity JO - Serdica Mathematical Journal PY - 2010 SP - 265 EP - 284 VL - 35 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SMJ2_2010_35_3_a5/ LA - en ID - SMJ2_2010_35_3_a5 ER -