Ulyatt et al., 1974. J. Agric. Sci. Camb., 82: 295-307

Ulyatt, M. J. ; MacRae, J. C., 1974. Quantitative digestion of fresh herbage by sheep. The sites of digestion of organic matter, energy, readily fermentable carbohydrate, structural carbohydrate, and lipid. J. Agric. Sci., 82: 295-307