Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1978__236_163175, author = {William C. Lyford}, title = {Spectral {Analysis} of the {Laplacian} in {Distorted} {Periodic} {Waveguides.}}, journal = {Mathematische Annalen}, pages = {255--284}, publisher = {mathdoc}, volume = {236}, year = {1978}, zbl = {0399.35082}, url = {http://geodesic.mathdoc.fr/item/MAN_1978__236_163175/} }
William C. Lyford. Spectral Analysis of the Laplacian in Distorted Periodic Waveguides.. Mathematische Annalen, Tome 236 (1978), pp. 255-284. http://geodesic.mathdoc.fr/item/MAN_1978__236_163175/