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"On extensions, linear extensions, upsets and downsets of ordered sets."
Ricardo C. Corrêa, Jayme Luiz Szwarcfiter (2005)
- Ricardo C. Corrêa, Jayme Luiz Szwarcfiter:
On extensions, linear extensions, upsets and downsets of ordered sets. Discret. Math. 295(1-3): 13-30 (2005)
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