Drexel M, Peng X, Richey J. Word Length, Bias and Bijections in Penney’s Ante. Electron. J. Combin. [Internet]. 2025Nov.28 [cited 2026Mar.27];32(4):P4.57. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v32i4p57