Trusov, N. A. “Aril Morphological Nature and Its Function in Some Aristolochia, Asarum, Celastrus, Euonymus, Euphorbia, Viola and Taxus”. Turczaninowia, Vol. 19, no. 3, Sept. 2016, pp. 106-14, https://turczaninowia.asu.ru/article/view/1512.