1. D.F. Woodward, J.A. Burke, L.S. Williams, B.P. Palmer, L.A. Wheeler, G. Ruiz, and J. Chen, Prostaglandin Fla effects on intraocular pressure negatively correlate with classical PGFZa(FP) receptor stimulationInvest. Ophthalmol. Vis. Sci.30:1838 (1989).