Shalimar Felippe da Silva, Charles, and Marcelo Silva de Oliveira. “Measurement and Analysis in CMMI With Six Sigma Methodology and ISO IEC IEEE 15939”. Sigmae 11, no. 2 (January 6, 2023): 21–35. Accessed April 29, 2024. http://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/597.