参考文献

Wood, Nichole Lea; Amaratunga, Mohan Mark; Grade, Hans; Syud, Faisal Ahmed; Sood, Anup; Smith, Reginald Donovan; Dinc, Ayse Betul; Williams, Amy Casey; Murray, Anthony (Tony) John; Goddard, Gregory Daryll Patent: US2007/140967 A1, 2007 ; Location in patent: Page/Page column 9 ;