1. Department
of Industrial Engineering, University of Florence, via S. Marta
3, 50139 Florence, Italy
2. Centro
di Cristallografia Strutturale, University of Florence, via della
Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
3. Menarini Ricerche
S.p.A., via Sette Santi 3, 50131 Florence, Italy
4. Menarini Ricerche
S.p.A., Via Livornese 897, 56122 Pisa, Italy