Determination of the activation energies of beef tallow and crude glycerin combustion using thermogravimetry - Crnkovic, Paula Manoel; Koch, Christoph; Ávila, Ivonete; Mortari, Daniela Andresa; Maturana Cordoba, Aymer Yeferson; Santos, Antônio Moreira dos (Biomass and Bioenergy, 2012)