1. Department of Nanocomputing, Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, I. R. Iran
2. Department of Pure Mathematics, Faculty of Mathematical Sciences, University of Kashan, Kashan, I. R. Iran
3. Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babes–Bolyai University, Cluj, Romania
4. Actinium Chemical Research, Via Casilina 1626/A, Rome, Italy