@article{MASLO_1996__46_5_a1,
     author = {Rutkowski, Aleksander},
     title = {Which countable ordered sets have a dense linear extension?},
     journal = {Mathematica slovaca},
     pages = {445--455},
     publisher = {mathdoc},
     volume = {46},
     number = {5},
     year = {1996},
     mrnumber = {1451035},
     zbl = {0890.06003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1996__46_5_a1/}
}