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@article{CM_1972__24_3_359_0, author = {Lutzer, David J.}, title = {Another property of the {Sorgenfrey} line}, journal = {Compositio Mathematica}, pages = {359--363}, publisher = {Wolters-Noordhoff Publishing}, volume = {24}, number = {3}, year = {1972}, mrnumber = {307171}, zbl = {0239.54015}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1972__24_3_359_0/} }
Lutzer, David J. Another property of the Sorgenfrey line. Compositio Mathematica, Tome 24 (1972) no. 3, pp. 359-363. http://geodesic.mathdoc.fr/item/CM_1972__24_3_359_0/