Reference

M.J.P.J. Jenniskens, Hans C. M. Den Nijs, Bert A. Huizing (1984): Karyogeography of Taraxacum sect. Taraxacum and the possible occurence of facultative agamospermy in Bavaria and north-western Austria – Phyton, Annales Rei Botanicae, Horn – 24: 11 - 34.