@article{10_4153_CMB_1967_075_6, author = {Clark, Colin}, title = {Rellich's {Embedding} {Theorem} for a {{\textquotedblleft}Spiny} {Urchin{\textquotedblright}}}, journal = {Canadian mathematical bulletin}, pages = {731--734}, year = {1967}, volume = {10}, number = {5}, doi = {10.4153/CMB-1967-075-6}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-075-6/} }