@article{GDZPPN002316234,
title = {Spectral Analysis of the Laplacian in Distorted Periodic Waveguides.},
journal = {Mathematische Annalen},
volume = {237},
year = {1978},
pages = {255-284},
zbl = {0399.35082},
url = {http://dml.mathdoc.fr/item/GDZPPN002316234}
}
Lyford, William C. Spectral Analysis of the Laplacian in Distorted Periodic Waveguides.. Mathematische Annalen, Tome 237 (1978) pp. 255-284. http://gdmltest.u-ga.fr/item/GDZPPN002316234/