Girgis, A. Y., El-Aziz, N. A., & El-Salam, S. A. (1998). Physical and chemical characteristics of toilet soap made from apricot kernel oil and palm stearin. Grasas Y Aceites, 49(5-6), 434–439. https://doi.org/10.3989/gya.1998.v49.i5-6.754