References
- Davies, R. W. & Everett, R. P., 1977: The life history, growth, and age structure of Nephelopsis obscura Verrill, 1872 (Hirudinoidea) in Alberta. — Can. J. Zool. 55: 620–627.
- Davies, R. W., Reynoldson, T. B. & Everett, R. P., 1977: Reproductive strategies of Erpobdella punctata (Hirudinoidea) in two temporary ponds. — Oikos 29: 313–319.
- Davies, R. W., Wrona, F. J. & Linton, L., 1982: Changes in numerical dominance and its effects on prey utilization and inter-specific competition between Erpobdella punctata and Nephelopsis obscura (Hirudinoidea): an assessment. — Oikos 39: 92–99.
- Davies, R. W., Yang, T. & Wrona, F. J., 1987: Inter- and intra-specific differences in the effects of anoxia on Erpobdellid leeches using static and flow-through systems. — Holarctic Ecology 10: 149–153.
- Wrona, F. J. & Davies, R. W., 1984: An improved flow-through respirometer for aquatic macroinvertebrate bioenergetic research. — Can. J. Fish. Aquat. Sci. 41: 380–385.