Souza, Caio Guilherme Secco, et al. “Study of Fish Oil Bleaching Using the Sodium Bentonite through a Factorial Design”. Semina: Ciências Exatas E Tecnológicas, vol. 32, no. 1, July 2011, pp. 107-14, doi:10.5433/1679-0375.2011v32n1p107.