Fávero, Eliane Maria De Bortoli, et al. “Analogy-Based Effort Estimation: A Systematic Mapping of Literature”. INFOCOMP Journal of Computer Science, vol. 17, no. 2, Dec. 2018, pp. 07-22, https://infocomp.dcc.ufla.br/index.php/infocomp/article/view/565.