Bendkowski, Maciej, Olivier Bodini, and Sergey Dovgal. “Statistical Properties of Lambda Terms”. The Electronic Journal of Combinatorics 26, no. 4 (October 11, 2019): P4.1. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v26i4p1.