Fábio Botler, Wanderson Lomenha, and João Souza. 2022.
 On the maximum number of edges in a graph with prescribed walk-nonrepetitive chromatic number. In <em>Anais do VII Encontro de Teoria da Computação</em>, julho 31, 2022, Niterói, Brasil. SBC, Porto Alegre, Brasil, 41-44. DOI: <a href="https://doi.org/10.5753/etc.2022.222730">https://doi.org/10.5753/etc.2022.222730</a>.