@article{GDZPPN002312050,
title = {Spectral Analysis of the Laplacian in Domains with Cylinders.},
journal = {Mathematische Annalen},
volume = {217},
year = {1975},
pages = {229-252},
zbl = {0313.35060},
url = {http://dml.mathdoc.fr/item/GDZPPN002312050}
}
Lyford, William C. Spectral Analysis of the Laplacian in Domains with Cylinders.. Mathematische Annalen, Tome 217 (1975) pp. 229-252. http://gdmltest.u-ga.fr/item/GDZPPN002312050/