Sylvie Pažoutová, Kamila Pešicová, Milada Chudíčková, Petr Šrůtkac kaj Miroslav Kolařík (2014). Delimitation of cryptic species inside Claviceps purpurea, Fungal Biology. doi:10.1016/j.funbio.2014.10.003.
Negård, Mariell, Indole-alkaloid profiles in Norwegian Claviceps purpurea populations - relationships between chemoraces, genetic groups, and ecology Disertaĵo universitato Oslo 2013 PDF