Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{RCM_1975__9_181639, author = {Harold Bell}, title = {Some topological extensions of plane geometry}, journal = {Revista colombiana de matematicas}, pages = {125--154}, publisher = {mathdoc}, volume = {9}, year = {1975}, zbl = {0331.54023}, url = {http://geodesic.mathdoc.fr/item/RCM_1975__9_181639/} }
Harold Bell. Some topological extensions of plane geometry. Revista colombiana de matematicas, Tome 9 (1975), pp. 125-154. http://geodesic.mathdoc.fr/item/RCM_1975__9_181639/