Martínez Nieto, L., and M. V. Moreno Romero. “Sterolic Composition of the Unsaponifiable Fraction of Oil of Avocado of Several Varieties”. Grasas Y Aceites, vol. 45, no. 6, Dec. 1994, pp. 402-3, doi:10.3989/gya.1994.v45.i6.1039.