Fišer, C., Trontelj, P., Luštrik, R. and Sket, B. (2009) “Toward a unified taxonomy of Niphargus (Crustacea: Amphipoda): a review of morphological variability”, Zootaxa. Auckland, New Zealand, 2061(1), pp. 1–22. doi: 10.11646/zootaxa.2061.1.1.