@article{MASLO_1990_40_4_a4,
author = {Czyzowicz, Jurek and Pelc, Andrzej and Rival, Ivan},
title = {Planar ordered sets of width two},
journal = {Mathematica slovaca},
pages = {375--388},
year = {1990},
volume = {40},
number = {4},
mrnumber = {1120968},
zbl = {0753.06001},
language = {en},
url = {http://geodesic.mathdoc.fr/item/MASLO_1990_40_4_a4/}
}
Czyzowicz, Jurek; Pelc, Andrzej; Rival, Ivan. Planar ordered sets of width two. Mathematica slovaca, Tome 40 (1990) no. 4, pp. 375-388. http://geodesic.mathdoc.fr/item/MASLO_1990_40_4_a4/
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