@article{1183532403, author = {Haver, William}, title = {A characterization theorem for cellular maps}, journal = {Bull. Amer. Math. Soc.}, volume = {76}, number = {4}, year = {1970}, pages = { 1277-1280}, language = {en}, url = {http://dml.mathdoc.fr/item/1183532403} }
Haver, William. A characterization theorem for cellular maps. Bull. Amer. Math. Soc., Tome 76 (1970) no. 4, pp. 1277-1280. http://gdmltest.u-ga.fr/item/1183532403/