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Dukes, M. 2014. Revstack Sort, Zigzag Patterns, Descent Polynomials of $t$-Revstack Sortable Permutations, and Steingrímsson’s Sorting Conjecture. The Electronic Journal of Combinatorics. 21, 2 (Apr. 2014), P2.2. DOI:https://doi.org/10.37236/3583.