Aseem R. Baranwal, Jeffrey Shallit. Critical Exponent of Infinite Balanced Words via the Pell Number System. In Robert Mercas, Daniel Reidenbach, editors, Combinatorics on Words - 12th International Conference, WORDS 2019, Loughborough, UK, September 9-13, 2019, Proceedings. Volume 11682 of Lecture Notes in Computer Science, pages 80-92, Springer, 2019. [doi]
Abstract is missing.