参考文献

WESTFAELISCHE WILHELMS-UNIVERSITAET MUENSTER; Haufe, Guenter; Levkau, Bodo; Schaefers, Michael; Schilson, Stefani Silke; Keul, Petra Patent: US2014/170067 A1, 2014 ; Location in patent: Paragraph 0490; 0491; 0492; 0493; 0494; 0495; 0496 ;