Reference

Tomas Fer, Petr Koutecky, Jan Kosnar, Jan Chlumsky, Milan Stech, Pavel Travnícek, Jan Suda, Miroslava Herbstová (2008): Addressing variation and phylogeographic pattern in the Melampyrum subalpinum group (Orobanchaceae) – Sauteria-Schriftenreihe f. systematische Botanik, Floristik u. Geobotanik – 16: 397 - 400.