E. G., I. Mahmoud, E. Abou-Moustafa, and T. Mabry, “Coumarins, Fatty Acids, Volatile and Non-volatile Terpenoids from the Leaves of Citrus aurantium L. (Sour Orange) and Citrus sinensis (L.) Osbeck (Sweet Orange)”, ajc, vol. 11, no. 3, pp. 784–789, Mar. 2010.