HansenR. W.: The Pharmaceutical Development Process: Estimates of Development Costs and Times and the Effects of Proposed Regulatory Changes, In Issues in Pharmaceutical Economics (ChienR. I., (Ed.) Lexington, Mass., Lexington Books, 1979.
2.
VirtsJ.WestonJ.Expectations and the Allocation of Research and Development Resources, In Drugs and Health, HelmsR. (Ed.) Washington, D.C., American Enterprise Institute, 1981, pp. 21–45.
3.
Pharmaceutical Manufacturers Association, Economic Costs of FDA Regulations, Washington, D.C., 1981.