Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1954__13_3_114735, author = {Bartholomay, A.F.}, title = {Type-invariance and h-retraction}, journal = {Portugaliae mathematica}, pages = {105--110}, publisher = {mathdoc}, volume = {13}, number = {3}, year = {1954}, mrnumber = {0097048}, zbl = {0058.38804}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1954__13_3_114735/} }
Bartholomay, A.F. Type-invariance and h-retraction. Portugaliae mathematica, Tome 13 (1954) no. 3, pp. 105-110. http://geodesic.mathdoc.fr/item/PORMA_1954__13_3_114735/