SCHULMAN, Leif; HALLFORS, Maria. Kumpula Botanic Garden, Helsinki, Finland. Sibbaldia: the International Journal of Botanic Garden Horticulture, [S. l.], n. 9, p. 11–28, 2011. DOI: 10.24823/Sibbaldia.2011.119. Disponível em: https://journals.rbge.org.uk/rbgesib/article/view/119. Acesso em: 4 jul. 2025.