Sibbald et al., 1976. Can. J. Anim. Sci., 56 (2): 255-268

Sibbald, I. R. ; Price, K., 1976. Relationships between metabolizable energy values for poultry and some physical and chemical data describing Canadian wheats, oats and barleys. Can. J. Anim. Sci., 56 (2): 255-268