Williams, K. (Inventor), Coster, D. (Inventor) & Klebe, S. (Inventor), 8 Jul 2008, United States Patent and Trademark Office, Patent No. US7396528B2, 30 Jan 2006
Jessup, C. (Inventor), Williams, K. (Inventor), Coster, D. (Inventor) & Brereton, H. (Inventor), 2004, Patent No. JP2007515398A, 19 Nov 2004, Priority date 19 Nov 2004, Priority No. PCT/AU2004/001606