参考文献

Schmidt, Thomas; Gebhardt, Joachim; Loehr, Sandra; Keil, Michael; Wevers, Jan Hendrik; Erk, Peter; Saxell, Heidi Emilia; Hamprecht, Gerhard; Mayer, Guido; Wolf, Bernd; Cox, Gerhard; Michel, Alfred; Seitz, Werner; Zagar, Cyrill; Reinhard, Robert; Sievernich, Bernd Patent: US2010/35905 A1, 2010 ; Location in patent: Page/Page column 7 ;