Freer et al., 1984. Anim. Feed Sci. Technol., 11: 87-101 Document reference Freer, M. ; Dove, H., 1984. Rumen degradation of protein in sunflower meal, rapeseed meal and lupin seed placed in nylon bags. Anim. Feed Sci. Technol., 11: 87-101Web https://doi.org/10.1016/0377-8401(84)90014-2Citation key Freer et al., 1984