%0 Journal Article %A Clark, Colin %T On Rellich's Theorem Concerning Infinitely Narrow Tubes %J Canadian mathematical bulletin %D 1964 %P 435-440 %V 7 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-043-6/ %R 10.4153/CMB-1964-043-6 %F 10_4153_CMB_1964_043_6