参考文献

BADIGER, Sangamesh; BEHNKE, Dirk; BETSCHART, Claudia; CHAUDHARI, Vinod; COTESTA, Simona; HINTERMANN, Samuel; LERCHNER, Andreas; LIMAM, Fatma; OFNER, Silvio; PANDIT, Chetan; WAGNER, Jürgen Patent: US2012/165331 A1, 2012 ; Location in patent: Page/Page column 72 ; US 20120165331 A1