Dehpour, A. A., M. A. Ebrahimzadeh, N. Seyed Fazel, and N. Seyed Mohammad. “Antioxidant Activity of the Methanol Extract of Ferula Assafoetida and Its Essential Oil Composition”. Grasas Y Aceites, vol. 60, no. 4, Sept. 2009, pp. 405-12, doi:10.3989/gya.010109.