%0 Journal Article %A Heath, Robert W. %A Michael, Ernest A. %T A property of the Sorgenfrey line %J Compositio Mathematica %D 1971 %P 185-188 %V 23 %N 2 %I Wolters-Noordhoff Publishing %U http://www.numdam.org/item/CM_1971__23_2_185_0/ %G en %F CM_1971__23_2_185_0