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@article{PORMA_1972__31_3_115176, author = {Doyle, P.H.}, title = {On compact subsets of an n-manifold}, journal = {Portugaliae mathematica}, pages = {179--181}, publisher = {mathdoc}, volume = {31}, number = {3}, year = {1972}, mrnumber = {0303525}, zbl = {0237.57004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1972__31_3_115176/} }
Doyle, P.H. On compact subsets of an n-manifold. Portugaliae mathematica, Tome 31 (1972) no. 3, pp. 179-181. http://geodesic.mathdoc.fr/item/PORMA_1972__31_3_115176/