YANKOVA-TSVETKOVA, E. P.; YURUKOVA-GRANCHAROVA, P.; BALDJIEV, G.; VITKOVA, A. Embryological features, pollen and seed viability of Arnica montana (Asteraceae) – a threatened endemic species in Europe. Acta Botanica Croatica, [S. l.], v. 75, n. 1, 2016. Disponível em: https://www.abc.botanic.hr/index.php/abc/article/view/1469. Acesso em: 30 jan. 2023.