1. Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
2. Department of Biochemical and Dental Sciences and Morphological and Functional Image, University of Messina, Messina, Italy
3. Le Studium, Loire Valley Institute for Advanced Studies, Orléans & Tours, France
4. Centre de Biophysique Moleculaire (CBM), rue Charles Sandron, Laboratoire Interfaces, Confinement, Materiaux et Nanostructures (ICMN) - UMR 7374 CNRS, Université d'Orleans, Orleans, France
5. INDAM - Gruppo Nazionale per la Fisica Matematica – GNFM, Istituto Nazionale di Alta Matematica “F. Severi, Rome, Italy