Bruno Abreu, Eliane Martins, and Fabiano Sousa. 2007.
 Generalized Extremal Optimization: a competitive algorithm for test data generation. In <em>Anais do XXI Simpósio Brasileiro de Engenharia de Software</em>, outubro 15, 2007, João Pessoa, Brasil. SBC, Porto Alegre, Brasil, 342-358. DOI: <a href="https://doi.org/10.5753/sbes.2007.21315">https://doi.org/10.5753/sbes.2007.21315</a>.