M. Miah, M. Rahman, M. Islam, and M. Monir, “Effects of Saponin and L-Carnitine on the Performance and Reproductive Fitness of Male Broiler”, Int. J. Poult. Sci., vol. 3, no. 8, pp. 530–533, Jul. 2004, doi: 10.3923/ijps.2004.530.533.