1. Department
of Mathematics, University of Modena and Reggio Emilia, Via Campi
213/B, I-41125 Modena, Italy
2. Inpellis, Inc., 100 Cummings Center,
Suite 243C, Beverly, Massachusetts 01915-6133, United States
3. Institute
of Environmental Engineering, University of Pannonia, Egyetem
u. 10, H-8200 Veszprém, Hungary
4. Department
of Chemistry and Technology of Biologically Active Compounds, University “La Sapienza”-Roma, P.le A. Moro 5, I-00185 Roma, Italy
5. Department
of Life Sciences, University of Modena and Reggio Emilia, Via Campi
103, I-41125 Modena, Italy