Almeida, W. R. de, Oliveira, D. C. R. de, & Gonçalves, A. T. (2017). The Behrens-Fisher Problem: theoretical aspects and applications using Excel. Sigmae, 5(2), 19–32. Retrieved from https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/517