%0 Journal Article %A William C. Lyford %T Spectral Analysis of the Laplacian in Domains with Cylinders. %J Mathematische Annalen %D 1975 %P 229-252 %V 218 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1975__218_162797/ %F MAN_1975__218_162797