13.
Kung Jr. L., Stokes M.R., Lin C.J., 2003. Silage additives. In: D.R. Buxton, R.E. Muck, J.H. Harrison (Editors). Silage science and technology. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. Madison, WI (USA), pp. 305–360.