ГРИГОРИШИН, Є. В. Germination and germination energy of pale purple coneflower (Echinacea pallida(Nutt.) Nutt.) depending on the influence of stimulants. Scientific Progress & Innovations, [S. l.], n. 3, p. 126–132, 2017. DOI: 10.31210/visnyk2017.03.29. Disponível em: https://journals.pdau.edu.ua/visnyk/article/view/267. Acesso em: 24 aug. 2025.