@article{10_21136_MB_2001_134202,
     author = {Nov\'ak, V{\'\i}t\v{e}zslav and Vr\'anov\'a, Lidmila},
     title = {Dense subsets of ordered sets},
     journal = {Mathematica Bohemica},
     pages = {571--579},
     publisher = {mathdoc},
     volume = {126},
     number = {3},
     year = {2001},
     doi = {10.21136/MB.2001.134202},
     mrnumber = {1970260},
     zbl = {0979.06002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2001.134202/}
}