Shuto, Satoshi; Horne, Graeme; Marwood, Rachel D.; Potter, Barry V. L. Chemistry - A European Journal, 2001, vol. 7, # 22 p. 4937 - 4946 doi: 10.1002/1521-3765(20011119)7:22<4937::AID-CHEM4937>3.0.CO;2-G