Carling, Robert W.; Moore, Kevin W.; Moyes, Christopher R.; Jones, Elizabeth A.; Bonner, Katrine; Emms, Frances; Marwood, Rosemary; Patel, Shil; Patel, Smita; Fletcher, Alan E.; Beer, Margaret; Sohal, Bindi; Pike, Andrew; Leeson, Paul D. Journal of Medicinal Chemistry, 1999 , vol. 42, # 14 p. 2706 - 2715