参考文献

Kumar, Virendra; Daum, Sol J.; Bell, Malcolm R.; Alexander, Michael A.; Christiansen, Robert G.; Ackerman, James H.; Krolski, Michael E.; Pilling, Carry M.; Herrmann Jr., John L.; Winneker, Richard C.; Wagner, Margaret M. Tetrahedron, 1991, vol. 47, # 28 p. 5099 - 5110 doi: 10.1016/S0040-4020(01)87122-2