NOWAK, Teresa. The occurrence and variation of Centaurea oxylepis (Wimm. & Grab.) Hayek in the Silesian Beskid. Biodiversity: Research and Conservation, [S. l.], n. 3-4, p. 262–265, 2006. DOI: 10.14746/biorc.2006.3-4.14. Disponível em: https://pressto.amu.edu.pl/index.php/biorc/article/view/42645. Acesso em: 19 jan. 2026.