Woodward et al., 2004. Proc. New Zealand Soc. Anim. Prod., 64: 160–164

Woodward, S. L. ; Waghorn, G. C. ; Laboyrie, P. G., 2004. Condensed tannins in birdsfoot trefoil (Lotus corniculatus) reduce methane emissions from dairy cows. Proc. New Zealand Soc. Anim. Prod., 64: 160–164