@article{RCM_2023_57_2_a0,
     author = {Gisel Mattar Marriaga},
     title = {The {Principal} {Symbol} {Map} for {Lagrangian} {Distributions} with {Complex} {Phase}},
     journal = {Revista colombiana de matematicas},
     pages = {155--177},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {2023},
     url = {http://geodesic.mathdoc.fr/item/RCM_2023_57_2_a0/}
}