Ábrego BM, Fernández-Merchant S, Katz DJ, Kolesnikov L. On the Number of Similar Instances of a Pattern in a Finite Set. Electron. J. Combin. [Internet]. 2016Dec.9 [cited 2026Mar.27];23(4):P4.39. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i4p39