Template:Kristensen, 1987
- Kristensen, R.M. in Bertolani, R. (ed.) 1987. Generic revision of the Echiniscidae (Heterotardigrada), with a discussion of the origin of the family. Biology of Tardigrades: Proceedings of the 4th International Symposium on the Tardigrada, Modena, September 3-5, 1985.