Aitchison et al., 1986. Brit. J. Nutr., 56: 463-476

Aitchison, E. M. ; Gill, M. ; Dhanoa, M. S. ; Osbourn, D. F., 1986. The effect of digestibility and forage species on the removal of digesta from the rumen and the voluntary intake of hay by sheep. Br. J. Nutr., 56: 463-476