1. Belkaoui, A., 1986, The learning curve—A management accounting tool: London, Quorum Books, 245 p.
2. Cargill, S.M., Root, D.H., and Baily, E.H., 1980, Resource estimation from historical data—Mercury, a test case: Mathematical Geology, v. 12, p. 489–522.
3. Dolton, G.L., Carlson, K.H., Charpentier, R.R., Coury, A.B., Crovelli, R.A., Frezon, S.E., Khan, A.S., Lister, J.H., McMullin, R.H., Pike, R.S., Powers, R.B., Scott, E.W., and Varnes, K.L., 1981, Estimates of undiscovered recoverable conventional resources of oil and gas in the United States: U.S. Geological Survey Circular 860, 87 p.
4. Gregg, J.V., Hossell, C.H., and Richardson, J.T., 1968, Mathematical trend curves—An aid to forecasting, Monograph No. 1 in Techniques of production control, prepared by Imperial Chemical Industries and Oliver and Boyd: Toronto, Van Nostrand, 99 p.
5. Halbouty, M.T., and Moody, J.D., 1980, World ultimate reserves of crude oil: 10th World Petroleum Congress, Bucharest, 1979, Proceedings, v. 2, p. 292–301.