Voir la notice de l'article provenant de la source European Digital Mathematics Library
@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/} }
Pu, H.W.; Pu, H.H. Two extension theorems for functions. Portugaliae mathematica, Tome 34 (1975) no. 1, pp. 9-14. http://geodesic.mathdoc.fr/item/PORMA_1975__34_1_115245/