Hula, Vladimir, Martin Konvička, Alois Pavlicko, and Zdenek Fric. “Marsh Fritillary (Euphydryas Aurinia) in the Czech Republic: Monitoring, Metapopulation Structure, and Conservation of an Endangered Butterfly”. Entomologica Fennica 15, no. 4 (December 1, 2004): 231–241. Accessed May 19, 2024. https://journal.fi/entomolfennica/article/view/84226.