Chua, Mei-Sze; Shi, Dong-Fang; Wrigley, Samantha; Bradshaw, Tracey D.; Hutchinson, Ian; Shaw, P. Nicholas; Barrett, David A.; Stanley, Lesley A.; Stevens, Malcolm F. G. Journal of Medicinal Chemistry, 1999 , vol. 42, # 3 p. 381 - 392