1. Bard, Y. (1974). Nonlinear parameter estimation. Academic Press.
2. Box, M.J. (1966). A comparison of several current optimization methods, and the use of transformations in constrained problems. The Computer Journal, 9, 67–77.
3. Chino, N. (1977). N-ko no taisho-kan no hitaisho na kankei o zusikika suru tame no ichi-giho. Proceedings of the 5-th annual conference of the Behaviormetric Society of Japan at Okayama University, 146–149.
4. Coombs, C.H. (1964). A theory of data. Wiley.
5. Coombs, C.H., Dawes, R.M. & Tversky, A. (1970). Mathematical Psychology. Prentice Hall.