Sapounakis, Aristidis, Panagiotis Tsikouras, Ioannis Tasoulas, and Kostas Manes. 2012. “Strings of Length 3 in Grand-Dyck Paths and the Chung-Feller Property”. The Electronic Journal of Combinatorics 19 (2), P2. https://doi.org/10.37236/2181.