da Silva, M. G., C. A. S. Almeida, A. M. R. O. Miguel, B. H. Gomide, E. S. Parra, and N. Bragagnolo. “Method for the Validation and Uncertainty Estimation of Tocopherol Analysis Applied to Soybean Oil With Addition of Spices and TBHQ”. Grasas Y Aceites, vol. 64, no. 4, Sept. 2013, pp. 378-86, doi:10.3989/gya.095012.