PETERSON, L. E. COVAR: Computer Program for Multifactor Relative Risks and Tests of Hypotheses Using a Variance-Covariance Matrix from Linear and Log-Linear Regression. Journal of Statistical Software, [S. l.], v. 2, n. 4, p. 1–21, 1997. DOI: 10.18637/jss.v002.i04. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v002i04. Acesso em: 27 apr. 2024.