@article{CM_1979__38_2_155_0,
     author = {Van Douwen, Eric K.},
     title = {Retracts of the {Sorgenfrey} line},
     journal = {Compositio Mathematica},
     pages = {155--161},
     publisher = {Sijthoff et Noordhoff International Publishers},
     volume = {38},
     number = {2},
     year = {1979},
     mrnumber = {528838},
     zbl = {0408.54004},
     language = {en},
     url = {http://www.numdam.org/item/CM_1979__38_2_155_0/}
}