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@article{PORMA_1946__5_4_114646, author = {Hu, Sze-Tsen}, title = {Homotopy properties of the spaces of continuous paths}, journal = {Portugaliae mathematica}, pages = {219--231}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1946}, mrnumber = {0019921}, zbl = {0060.41201}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1946__5_4_114646/} }
Hu, Sze-Tsen. Homotopy properties of the spaces of continuous paths. Portugaliae mathematica, Tome 5 (1946) no. 4, pp. 219-231. http://geodesic.mathdoc.fr/item/PORMA_1946__5_4_114646/