Authors
Stefka V. Valcheva-Kuzmanova
Department of Pharmacology and Clinical Pharmacology and Therapeutics, Medical University – Varna, Bulgaria
Petko N. Denev
Laboratory of Biologically Active Substances, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Plovdiv, Bulgaria
Manol H. Ognyanov
Laboratory of Biologically Active Substances, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Plovdiv, Bulgaria