1. Aoki M, (1971), Introduction to Optimization Techniques, McMillan Company, New York
2. Bard Y, (1974), Nonlinear Parameter Estimation, Academic Press, New York
3. Hsia TC, (1977), System Identification, Lexington Books
4. Iserman R, (1974), Process-Identification (in German), Springer, Berlin, Heidelberg, New York
5. Jacoby GLS, Kowolik Jg, Pizzo JT, (1972), Iterative Methods for Nonlinear Optimization Problems, Proentice Hall Publ., New Jersey