@article{2755, author = {Pu, H.W. and Pu, H.H.}, title = {Two extension theorems for functions}, journal = {Portugaliae mathematica}, volume = {34}, year = {1975}, pages = {9-14}, zbl = {0314.54014}, mrnumber = {0391027}, language = {en}, url = {http://dml.mathdoc.fr/item/2755} }
Pu, H.W.; Pu, H.H. Two extension theorems for functions. Portugaliae mathematica, Tome 34 (1975) pp. 9-14. http://gdmltest.u-ga.fr/item/2755/