@INPROCEEDINGS{Abonyi1999ConstrainedParameterEstimation, author = "J. Abonyi and R. Babu\v{s}ka and M. Setnes and H.B. Verbruggen and F. Szeifert", title = "Constrained Parameter Estimation in Fuzzy Modeling", booktitle= "Proceedings {FUZZ-IEEE}'99", pages = "951--956", address = "Seoul, Korea", month = aug, year = 1999}