@article{IM_1976__37_142432, author = {R.B. Melrose}, title = {Equivalence of {Glancing} {Hypersurfaces.}}, journal = {Inventiones mathematicae}, pages = {165--192}, year = {1976}, volume = {37}, url = {http://geodesic.mathdoc.fr/item/IM_1976__37_142432/} }