@article{CMJ_2000__50_4_a12,
     author = {Nov\'ak, V{\'\i}t\v{e}zslav and Novotn\'y, Miroslav},
     title = {Linear extensions of orderings},
     journal = {Czechoslovak Mathematical Journal},
     pages = {853--864},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2000},
     mrnumber = {1792975},
     zbl = {1079.06500},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000__50_4_a12/}
}