• McGuirk, P.R. et al., J. Med. Chem., 1992, 35, 611, (synth, sar)
• Giles, C.J. et al., J. Vet. Pharmacol. Ther., 1991, 14, 400, (activity, pharmacokinet)
• Eur. Pat., 1989, Pfizer, 342 849; CA, 113, 6177m, (synth)
• Schneider, R.P. et al., Biol. Mass. Spectrom., 1993, 22, 595, (hplc-ms)