Authors
Nina K. Ivanova
Department of Chemistry and Biochemistry, Medical University – Pleven, Bulgaria
Angelina M. Stoyanova
Department of Chemistry and Biochemistry, Medical University – Pleven, Bulgaria
Albena D. Bachvarova-Nedelcheva
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences - Sofia, Bulgaria
Reni S. Iordanova
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences - Sofia, Bulgaria