@article{PORMA_1975__34_1_115245,
     author = {Pu, H.W. and Pu, H.H.},
     title = {Two extension theorems for functions},
     journal = {Portugaliae mathematica},
     pages = {9--14},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1975},
     mrnumber = {0391027},
     zbl = {0314.54014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1975__34_1_115245/}
}