Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@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/} }
Rutkowski, Aleksander. Which countable ordered sets have a dense linear extension?. Mathematica slovaca, Tome 46 (1996) no. 5, pp. 445-455. http://geodesic.mathdoc.fr/item/MASLO_1996__46_5_a1/