参考文献

MENEAR, Keith Allan; Javaid, Muhammad Hashim; Gomez, Sylvie; Hummersone, Marc Geoffrey; Lence, Carlos Fenandez; Martin, Niall Morrison Barr; Rudge, David Alan; Roberts, Craig Anthony; Blades, Kevin Patent: US2009/192156 A1, 2009 ; Location in patent: Page/Page column 66 ;