@article{JRAM_1988__390_153064,
     author = {R. Weder},
     title = {Spectral and scattering theory in deformed optical wave guides.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {130--169},
     publisher = {mathdoc},
     volume = {390},
     year = {1988},
     zbl = {0644.35080},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1988__390_153064/}
}