Busato, E. (2012) “Pre-imaginal stages of Cychrus schmidti Chaudoir, 1837, and Cychrus semigranosus Palliardi, 1825, with a key to the larvae of the European Cychrus species (Coleoptera: Carabidae)”, Zootaxa. Auckland, New Zealand, 3361(1), pp. 1–17. doi: 10.11646/zootaxa.3361.1.1.