Burnett, Duane A.; Wu, Wen-Lian; Sasikumar, Thavalakulamgara K.; Greenlee, William J.; Caplen, Mary Ann; Guo, Tao; Hunter, Rachael Catherine Patent: US2005/54628 A1, 2005 ; Location in patent: Page/Page column 23-24; 10 ; US 20050054628 A1