OLIVEIRA, Rogério Antonio de, Giovanni Faria SILVA, and Liciana Vaz de Arruda SILVEIRA. 2015. “APPLICATION OF BUCKLEY-JAMES METHOD AS AN ALTERNATIVE TO COX MODEL IN VIOLATION OF PROPORTIONAL RISK ASSUMPTION”. Brazilian Journal of Biometrics 33 (3):395-402. http://www.biometria.ufla.br/index.php/BBJ/article/view/22.