@article{PORMA_1963__22_4_114910,
     author = {McCandless, Byron H.},
     title = {Retracts and extension spaces for perfectly normal spaces - {II}},
     journal = {Portugaliae mathematica},
     pages = {205--207},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1963},
     zbl = {0122.17501},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1963__22_4_114910/}
}