@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/}
}