Hula, V., M. Konvička, A. Pavlicko, and Z. Fric. “Marsh Fritillary (Euphydryas Aurinia) in the Czech Republic: Monitoring, Metapopulation Structure, and Conservation of an Endangered Butterfly”. Entomologica Fennica, vol. 15, no. 4, Dec. 2004, pp. 231–241, doi:10.33338/ef.84226.