@article{CM_1971__23_2_185_0, author = {Heath, Robert W. and Michael, Ernest A.}, title = {A property of the {Sorgenfrey} line}, journal = {Compositio Mathematica}, pages = {185--188}, publisher = {Wolters-Noordhoff Publishing}, volume = {23}, number = {2}, year = {1971}, mrnumber = {287515}, zbl = {0219.54033}, language = {en}, url = {http://www.numdam.org/item/CM_1971__23_2_185_0/} }