Y. A. Attia, E.-S. A. Qota, A. E.-H. E. Abd ElHamid, and T. A. Sadaka, “THE RESPONSE OF SLOW-GROWING CHICKS TO THE SUPPLEMENTATIONS WITH DIFFERENT METHIONINE LEVELS AND/OR TWO TYPES OF ENZYMES”, Emir J Food Agric, vol. 19, no. 2, pp. 48–63, Oct. 2017.