El-Shattory, Y., and S. M. Aly. “Soybean Lecithin: Acetone Insoluble Residue Fractionation and Their Volatile Components”. Grasas Y Aceites, vol. 53, no. 3, Sept. 2002, pp. 319-23, doi:10.3989/gya.2002.v53.i3.323.