E. Martínez Martín, M. Piedra Díaz, L. Acosta Martínez, and R. Rives Sanz, “Factors Affecting the Stability of Crude and Transmission Oil Emulsion Swith Surfactant Solutions”, Revista Cubana de Ingeniería, vol. 7, no. 1, pp. 43–49, Apr. 2016.