参考文献

KHAMAR, Bakulesh, Mafatlal; MODI, Indravadan, Ambalal; VENKATRAMAN, Jayaraman; RAVI, Ponnaiah; DESAI, Sanjay, Jagadish; SINGH, Ramesh, Chandra; SONDAGAR, Keval, Rameshkumar Patent: WO2007/74390 A2, 2007 ; Location in patent: Page/Page column 7 ;