Manoel Campelo, Rafael Lima, and Cláudia Sales. 2026.
 Complexity of the Girth Problem on Arc-colored Digraphs. In <em>Anais do XI Encontro de Teoria da Computação</em>, julho 19, 2026, Gramado/RS, Brasil. SBC, Porto Alegre, Brasil, 90-94. DOI: <a href="https://doi.org/10.5753/etc.2026.23502">https://doi.org/10.5753/etc.2026.23502</a>.