Ilić, Aleksandar, Sandi Klavžar, and Yoomi Rho. “Parity Index of Binary Words and Powers of Prime Words”. The Electronic Journal of Combinatorics 19, no. 3 (October 4, 2012): P44. Accessed April 4, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i3p44.