Reference
Filip Kolár, Milan Stech, Pavel Travnícek, Petr Vít, Tomas Urfus, Jan Suda (2008): Cytotype structure of Knauta avensis agg. at various spatial scales – Sauteria-Schriftenreihe f. systematische Botanik, Floristik u. Geobotanik – 16: 217 - 218.