参考文献

Pastor-Fernández, Joaquin; Bartolomé-Nebreda, José Manuel; Macdonald, Gregor James; Conde-Ceide, Susana; Delgado-González, Óscar; Vanhoof, Greta Constantia Peter; Van Gool, Michiel Luc Maria; Martin-Martín, María Luz; Alonso-de Diego, Sergio-Alvar; Swinney, Kelly Ann; Leys, Carina; Weerts, Johan Erwin Edmond; Wuyts, Stijn Patent: US2011/269752 A1, 2011 ; Location in patent: Page/Page column 39 ;