Robert Brignall, Nikola Ruskuc, Vincent Vatter. Simple permutations: Decidability and unavoidable substructures. Theoretical Computer Science, 391(1-2):150-163, 2008. [doi]
@article{BrignallRV08,
title = {Simple permutations: Decidability and unavoidable substructures},
author = {Robert Brignall and Nikola Ruskuc and Vincent Vatter},
year = {2008},
doi = {10.1016/j.tcs.2007.10.037},
url = {http://dx.doi.org/10.1016/j.tcs.2007.10.037},
researchr = {https://researchr.org/publication/BrignallRV08},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {391},
number = {1-2},
pages = {150-163},
}