Raghavan, Subharekha; Colletti, Steven L.; Ding, Fa-Xiang; Shen, Hong; Tata, James R.; Lins, Ashley Rouse; Smenton, Abigail Lee; Chen, Weichun; Schmidt, Darby Rye; Tria, George Scott Patent: US2006/293364 A1, 2006 ; Location in patent: Page/Page column 32; 53; 64 ; US 20060293364 A1