TY - JOUR AU - Yibiao Pan AU - Christopher D. Sogge TI - Oscillatory integrals associated to folding canonical relations JO - Colloquium Mathematicum PY - 1990 SP - 413 EP - 419 VL - 60 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-2-413-419/ DO - 10.4064/cm-60-61-2-413-419 LA - en ID - 10_4064_cm_60_61_2_413_419 ER -