A non-michaelian behavior of the in vitro metabolism of the pentacyclic triterpene alfa and beta amyrins by employing rat liver microsomes - Moreira, Fernanda de Lima; Souza, Gustavo Henrique Bianco de; Rodrigues, Ivanildes Vasconcelos; Lopes, Norberto Peporine; Oliveira, Anderson Rodrigo Moraes de (Journal of Pharmaceutical and Biomedical Analysis, 2013)