Shumyk, M., S. Mashkovska, N. Belova, N. Kozyrovska, and N. Savaskul. “Optimization of Cultivation Technology of the Genus Rhododendron L. Species by through the Use of Drugs of Biological Origin”. Plant Introduction, Vol. 50, June 2011, pp. 70-78, doi:10.5281/zenodo.2544867.