1. Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
2. Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, Dokki, Cairo, Egypt
3. National Research and Development Institute for Textiles and Leather – Division Leather and Footwear Research Institute, Bucharest, Romania, 93 Ion Minulescu, 031215, Bucharest, Romania