参考文献

Agejas-Chicharro, Javier; Belen Bueno Melendo, Ana; Camp, Nicholas Paul; Gilmore, Jeremy; Jimenez-Aguado, Alma Maria; Lamas-Peteira, Carlos; Marcos-Llorente, Alicia; Mazanetz, Michael Philip; Montero Salgado, Carlos; Timms, Graham Henry; Williams, Andrew Caerwyn Patent: US2004/122001 A1, 2004 ; US 20040122001 A1