M. Nikolova, A. Gavrilova, M. Sozoniuk, A. Trendafilova, and M. Petrova, “Contribution to the Authentication of Arnica montana Flower-based Herbal Drugs Using High-performance Thin-layer Chromatography (HPTLC) Analysis”, C. R. Acad. Bulg. Sci., vol. 78, no. 5, pp. 676–683, May 2025.