Tahmasbi, A.M., et al. “Influence of β-Adrenergic Agonist (Metaproterenol) and Lysine on Growth, Carcass Quality in Broiler Chickens”. International Journal of Poultry Science, vol. 5, no. 11, Oct. 2006, pp. 1082–1086, https://doi.org/10.3923/ijps.2006.1082.1086.