TY - JOUR AU - Gisel Mattar Marriaga TI - The Principal Symbol Map for Lagrangian Distributions with Complex Phase JO - Revista colombiana de matematicas PY - 2023 SP - 155 EP - 177 VL - 57 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RCM_2023_57_2_a0/ ID - RCM_2023_57_2_a0 ER -