1. AOAC. 1998. Officinal methods of analysis. 16th Edition, AOAC International, Gaithersburg, MD.
2. AOCS. 2005. Official procedure, approved procedure Am 5-04, Rapid determination of oil/fat utilizing high temperature solvent extraction. J Am Oil Chem Soc, Urbana, IL.
3. Ankom Technology, 2005. In vitro true digestibility using th Daisy II Incubator. Available from http://www.ankom.com/media/documents/ IVDMD_0805D200.pdf. Accessed:13.09.2010.
4. Anonymous, 2006. Dairy industry drought response. feeding canola hay&silage. Available from http://www.dairyaustralia.com.au/files7Drought/canola_hay_silage_bulletin_no_8. pdf Accessed:29.11.2006
5. Armstrong, R.H., Beattie, M.M., Robertson, E., 1993. Intake and digestibility of components of forage rape (Brassica napus) by sheep. Grass and Forage Science. 48 (4):410-415. Doi: 10.1111/j.1365-2494.1993.tb01875.x