参考文献:
Muller, Nikolaus Magerlein, Wolfgang Beller, Matthias Schareina, Thomas Zapf, Alexander Patent: US29/6254 A, 29 Location in patent: Page/Page column 4
参考文献:
Brooner, Rachel E. M. Brown, Timothy J. Widenhoefer, Ross A. Angewandte Chemie - International Edition, 23 , vol. 52, # 24 p. 6259 - 626 Angew. Chem., 23 , vol. 25, # 24 p. 6379 - 638,3