@article{GDZPPN002093502,
title = {The Propagation of Singularities along Gliding Rays.},
journal = {Inventiones mathematicae},
volume = {41},
year = {1977},
pages = {197-232},
zbl = {0373.35053},
url = {http://dml.mathdoc.fr/item/GDZPPN002093502}
}
Melrose, R.B.; Andersson, K.G. The Propagation of Singularities along Gliding Rays.. Inventiones mathematicae, Tome 41 (1977) pp. 197-232. http://gdmltest.u-ga.fr/item/GDZPPN002093502/