1. Ecological study of Enchytraeidae (Oligochaeta) in Norwegian forest soils;Abrahamsen;Pedobiologia,1972
2. Biomass and body surface area of populations of Enchytraeidae and Lumbricidae (Oligochaeta) in Norwegian coniferous forest soils;Abrahamsen;Pedobiologia,1973
3. A description of five new species of Enchytraeidae (Oligochaeta) from Ireland;Healy;Zool. .J. Linn. Soc,1975
4. Taxonomy and ecology of Enchvtraedae (Oligochaeta) in Ireland;Healy;Ph. D. Thesis. National University of Ireland,1976
5. Cernosutoriella palustris, n. sp., Fridericia syloatka n. sp. and Mariomna arenarian. sp., new species of Enchytraeidae (Oligochaeta) from Ireland. Zool. .J. Linn. Soc. (in press). Nielsen, C. O.. 1954. Studies on Enchytraeidae. 3;Healy;The microdistribution of Enchytraeidae. Oikos,1978