Waringer, J., Previšić, A., Kućinić, M., Graf, W., Vitecek, S., Keresztes, L., Bálint, M., & Pauls, S. U. (2016).

Larval morphology of the Western Balkans endemic caddisflies Drusus krusniki Malicky 1981, D. vernonensis Malicky 1989, and D. vespertinus
Marinković-Gospodnetić 1976 (Trichoptera, Limnephilidae, Drusinae)

. Zootaxa, 4083(4), 483–500. https://doi.org/10.11646/zootaxa.4083.4.2