参考文献:
Boehringer Ingelheim International GmbH GRAUERT, Matthias BISCHOFF, Daniel DAHMANN, Georg KUELZER, Raimund RUDOLF, Klaus Patent: US03/8448 A, 03 Location in patent: Paragraph 0330 033 033
参考文献:
Alam, Muzaffar Du Bois, Daisy Joe Hawley, Ronald Charles Kennedy-Smith, Joshua Minatti, Ana Elena Palmer, Wylie Solang Silva, Tania Wilhelm, Robert Stephen Patent: US0/750 A, 0 Location in patent: Page/Page column 33