Examination of the Effects of Licensure, unpublished Ph.D. dissertation, Princeton University, 1974. DeVany, Arthur S., and Thomas R. Saving, Product Quality, Uncertainty and Regulation-The Trucking Industry,' American Economic Reviev 67 (Sept. 1977), 583-594. Gross, Donald, and Carl M. Harris, Funcdamentals of Queueing Theory (New York: Wiley, 1974). Halter, Albert N., H. D. Carter, and J. G. Hocking, A Note on Transcendental Production Function, Journal of Farm Economics 39 (Nov. 1957), 966-974. Marschak, Jacob, and William H. Andrews, Random Simultaneous Equations and the Theory of Production, Econometrica 12 (July-Oct. 1944), 143-205. Reinhardt, Uwe, A Production Function for Physician Services, this REVIEW 54 (Feb. 1972), 55-66. Scheffler, Richard M., and John E. Kushman, A Production Function for Dental Services: Estimation and Economic Implications, Southern Economic Journal 44 (July 1977), 25-35. Zellner, Arnold, Jan Kmenta, and Jacques Dreze, Specification and Estimation of Cobb-Douglas Production Function Models, Econometric a 34 (Oct. 1966), 784-795.