1. Banyasz, C.S.; Haber, R.; Keviczky, L. Some estimation methods for nonlinear discrete time identification. IFAC Symp. Ident. Sys. Param. Est. 3:793–802; 1973.
2. Dieudonné, J. Foundations of modern analysis. Berlin, Heidelberg, New York: Springer; 1976.
3. Frechet, M. Sur les fonctionnelles continues. Annales Scientifiques de l'Ecole Normal Superieure 27:193–219; 1910.
4. Glass, L.; Mackey, M.C. From clocks to chaos. Princeton: Princeton University; 1988.
5. Golub, G.H.; Van Loan, C.F. Matrix computations (2nd ed.). Baltimore: Johns Hopkins Univ. Press; 1989.