Dryden et al., 1983. Anim. Feed Sci. Technol., 10: 65-76 Document reference Dryden, G. McL. ; Kempton, T. J., 1983. Digestion of organic matter and nitrogen in ammoniated barley straw. Anim. Feed Sci. Technol., 10: 65-76Web http://www.sciencedirect.com/science/article/pii/0377840183900068Citation key Dryden et al., 1983