Fernando K. Kamei, Sergio Soares, and Gustavo Pinto. 2019.
 The Use of Grey Literature Review as Evidence for Software Engineering. In <em>Anais Estendidos do X Congresso Brasileiro de Software: Teoria e Prática</em>, setembro 25, 2019, Salvador, Brasil. SBC, Porto Alegre, Brasil, 56-63. DOI: <a href="https://doi.org/10.5753/cbsoft_estendido.2019.7656">https://doi.org/10.5753/cbsoft_estendido.2019.7656</a>.