TY - JOUR AU - Willi Jäger AU - Yoshimi Saito TI - On the spectrum of the reduced wave operators with cylindrical discontinuity. JO - Forum mathematicum PY - 1997 SP - 29 EP - 60 VL - 9 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FORUM_1997__9_2_141792/ ID - FORUM_1997__9_2_141792 ER -