BatesDouglas M. and DonaldG. Watts (1988), Nonlinear Regression Analysis. New York: John Wiley & Sons, Inc.
2.
JudgeGeorge G., HillR. Carter, WilliamE. Griffiths, HelmutLutkepohl, and Tsoung-ChaoLee (1988), Introduction to the Theory and Practice of Econometrics, 2nd ed. New York: John Wiley & Sons, Inc.
3.
MidgleyDavid F. (1976), “A Simple Mathematical Model of Innovative Behavior,” Journal of Consumer Research, 3 (June), 31–41.
4.
RatkowskyDavid A. (1983), Nonlinear Regression: A Unified Practical Approach. Marcel Dekker, Inc.