Petrova, M., Nikolova, M., Dimitrova, L., Zayova, E. (2015) Micropropagation and evaluation of flavonoid content and antioxidant activity of Salvia officinalis L. = Project BG051PO001-3.3.06-0025 "Support for training and development of young competitive research experts in the field of physiology, phytochemi, с. 48-60,.