参考文献:
Le Borgne, Marc Na, Young Min Pagniez, Fabrice Le Baut, Guillaume Le Pape, Patrice Abdala, Hiam Patent: US200/67998 A, 200 Location in patent: Page/Page column 2
参考文献:
Katritzky, Alan R. Perumal, Subbu Savage, G. Paul Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (972-999), 990 , # 6 p. 92 - 92