The following publications are possibly variants of this publication:
- (2+2)-free posets, ascent sequences and pattern avoiding permutationsMireille Bousquet-Mélou, Anders Claesson, Mark Dukes, Sergey Kitaev. JCT, 117(7):884-909, 2010. [doi]
- Composition Matrices, (2+2)-Free Posets and their SpecializationsMark Dukes, Vít Jelínek, Martina Kubitzke. combinatorics, 18(1), 2011. [doi]
- Ascent Sequences and Upper Triangular Matrices Containing Non-Negative IntegersMark Dukes, Robert Parviainen. combinatorics, 17(1), 2010. [doi]