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MR ZblSkula, Ladislav. Prime elements in the semigroup of finite types of partially ordered sets in cardinal multiplication. Archivum mathematicum, Tome 4 (1968) no. 2, pp. 97-101. http://geodesic.mathdoc.fr/item/ARM_1968_4_2_a2/
@article{ARM_1968_4_2_a2,
author = {Skula, Ladislav},
title = {Prime elements in the semigroup of finite types of partially ordered sets in cardinal multiplication},
journal = {Archivum mathematicum},
pages = {97--101},
year = {1968},
volume = {4},
number = {2},
mrnumber = {0277441},
zbl = {0208.28904},
language = {en},
url = {http://geodesic.mathdoc.fr/item/ARM_1968_4_2_a2/}
}
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