@article{CMUC_1987__28_1_a13,
     author = {van Douwen, Eric K.},
     title = {Closed copies of the rationals},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {137--139},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1987},
     mrnumber = {889775},
     zbl = {0614.54028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987__28_1_a13/}
}