Smith VK, Poulos C, Kim H. Treating open space as an urban amenity. Resour Energy Econ. 2002 Feb 15;24(1-2):107-29.
Brosnihan KB, Weddle D, Anthony MS, Heise C, Li P, Ferrario CM. Effects of chronic hormone replacement on the renin-angiotensin system in cynomolgus monkeys. J Hypertens. 1997 Jul;15(7):719-26.