1. ABARE (Australian Bureau of Agricultural Economics), 2008. Australian Commodities, March Quarter 08.1. Website viewed July 2008. http://www.abareconomics.com/publications_html/ac/ac_08/ac_march08.pdf.
2. Australian Wool Innovation, 2008. Progress of the Australian Wool Innovation R&D on mulesing alternatives. Website viewed November 2008. http://www.wool.com.au/mediaLibrary/attachments/Publications/Progress_of_AWI_mulesing_R&D_August08.pdf.
3. Studying stress to assess animal welfare;Barnett,2003
4. Science and its application in assessing the welfare of laying hens;Barnett;Aust. Vet. J.,2003
5. A review of the welfare issues for sows and piglets in relation to housing;Barnett;Aust. J. Agric. Res.,2001