参考文献

Thomas, Richard Charles; Poel, Toni-Jo; Barbachyn, Michael Robert; Gordeev, Mikhail Fedor; Luehr, Gary W.; Renslo, Adam; Singh, Upinder; Josyula, Vara Prasad Venkata Nagendra Patent: US2004/147760 A1, 2004 ; Location in patent: Page 70 ;