P. W. Waldroup, S. E. Watkins, J. T. Skinner and A. D. Desai
International Journal of Poultry Science 1 ( 1,2,3 ): 13 - 15 , 2002
S. E. Watkins, E. A. Saleh and P. W. Waldroup
International Journal of Poultry Science 1 ( 4 ): 53 - 58 , 2002