参考文献

Arduengo III, Anthony J.; Calabrese; Davidson, Fredric; Rasika Dias; Goerlich, Jens R.; Krafezyk, Roland; Marshall, William J.; Tamm, Matthias; Schumtzler, Reinhard Helvetica Chimica Acta, 1999 , vol. 82, # 12 p. 2348 - 2364