@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/