Bell, Harold. "Some topological extensions of plane geometry." Revista colombiana de matematicas 9 (1975): 125-154. <http://eudml.org/doc/181639>.
@article{Bell1975, author = {Bell, Harold}, journal = {Revista colombiana de matematicas}, pages = {125-154}, title = {Some topological extensions of plane geometry}, url = {http://eudml.org/doc/181639}, volume = {9}, year = {1975}, }
TY - JOUR AU - Bell, Harold TI - Some topological extensions of plane geometry JO - Revista colombiana de matematicas PY - 1975 VL - 9 SP - 125 EP - 154 UR - http://eudml.org/doc/181639 ER -