de Mello, R. M. ., P. C. da Silva, and G. H. Travassos. “Investigating Probabilistic Sampling Approaches for Large-Scale Surveys in Software Engineering”. Journal of Software Engineering Research and Development, vol. 3, May 2015, pp. 8:1 - 8:26, https://sol.sbc.org.br/journals/index.php/jserd/article/view/414.