Nadia Lassouaoui Latifa Hamami A. Zerguerras Segmentation and classification of biological cell images by a multifractal approach. 657-678 2003 18 Int. J. Intell. Syst. 6 http://dx.doi.org/10.1002/int.10110 db/journals/ijis/ijis18.html#LassouaouiHZ03