POSPIELOV, S.; POSPIELOVA, G.; ZEZEKALO, Ye.; ONIPKO, V.; MANACHYNSKYI, O. Formation of pale purple coneflower (Echinacea pallida (Nutt.) Nutt.) seed productivity in the conditions of the Left-Bank Forest-Steppe of Ukraine. Scientific Progress & Innovations, [S. l.], v. 28, n. 1, p. 68–74, 2025. DOI: 10.31210/spi2025.28.01.12. Disponível em: https://journals.pdau.edu.ua/visnyk/article/view/2033. Acesso em: 13 oct. 2025.