Deutsch E, Hildebrand AJ, Wilf HS. Longest Increasing Subsequences in Pattern-Restricted Permutations. Electron. J. Combin. [Internet]. 2003May3 [cited 2026Mar.30];9(2):R12. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v9i2r12