1.
Dudek A, Grytczuk J, RuciƄski A. Variations on Twins in Permutations. Electron. J. Combin. [Internet]. 2021Jul.16 [cited 2026Mar.29];28(3):P3.19. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v28i3p19