参考文献

Phan, Hieu Trung; Nguyen, Lan Mong; Azoulay, Raymond; Diep, Vinh Van; Eschenhof, Harald; Niesor, Eric Joseph; Bentzen, Craig Leigh; Ife, Robert John Patent: US2005/124586 A1, 2005 ; Location in patent: Page/Page column 8 ;