参考文献
STEURER, Steffen; BETZEMEIER, Bodo; MCCONNELL, Darryl; GERSTBERGER, Thomas; GRAUERT, Matthias; HOFFMANN, Matthias; IMPAGNATIELLO, Maria; van der VEEN, Lars; WEYER-CZERNILOFSKY, Ulrike
Patent: US2007/270401 A1, 2007 ;
Location in patent: Page/Page column 6 ;