Zaytseva, Y., E. Ambros, and T. Novikova. “Rooting and Acclimatization to Ex Vitro Conditions of Regenerants of Frost-Resistant Members of Rhododendron”. Turczaninowia, Vol. 21, no. 1, Mar. 2018, pp. 144-52, https://turczaninowia.asu.ru/article/view/3834.