Kornievskiy, Y. I., D. Yu. Skoryna, V. H. Korniievska, and N. V. Kandybei. “Comparative Chromato-Mass Spectrometric Study of Tinctures Based on Echinacea Purpurea (L.) Moench”. Current issues in pharmacy and medicine: science and practice 14, no. 3 (October 25, 2021): 275–281. Accessed April 30, 2024. http://pharmed.zsmu.edu.ua/article/view/242845.