Berg, K. 1929. A faunistic and biological study of Danish Cladocera. Vidensk. Medd., 88, 31–112.

Flössner, D. 1964. Zur Cladocerenfauna des Stechlinsee-Gebietes II. Ökologische Untersuchnungen über die litoralen arten. Limnologica (Berlin), 2, 35–103.

Frey, D. G. 1982. Contrasting strategies of gamogenesis in northern and southern populations of Cladocera. Ecology, 63, 223–241.
doi:10.2307/1937046

Frey, D. G. 1986. The non-cosmopolitanism of chydorid Cladocera: Implications for biogeography and evolution. In Crustacean Biogeography (Gore, R. H. & Heck, K. L., eds), pp. 237–256. Balkema, Rotterdam.

Goulden, C. E. 1971. Environmental control of the abundance and distribution of the chydorid Cladocera. Limnol. Oceanogr., 16, 320–331.

Green, J. 1966. Seasonal variation in egg production by Cladocera. J. Anim. Ecol., 35, 77–104.
doi:10.2307/2691

Helminen, V. A. 1987. Thermal conditions. In Climate. Atlas of Finland. Appendix 131 (Alalammi, P., ed.), pp. 4–10. National Board of Survey and Geographical Society of Finland, Helsinki.

Järnefelt, H. 1956. Materialien zur Hydrobiologie des Sees Tuusulanjärvi. Acta Soc. Fauna Flora Fenn., 71, 1–38.

Kleiven, O. T., Larsson, P. & Hobæk, A. 1992. Sexual reproduction in Daphnia magna requires three stimuli. Oikos, 65, 197–206.
doi:10.2307/3545010

Koksvik, J. I. 1995. Seasonal occurrence and diel locomotor activity in littoral Cladocera in a mesohumic lake in Norway. Hydrobiologia, 307, 193–201.
doi:10.1007/BF00032012

Kubersky, E. S. 1977. Worldwide distribution and ecology of Alonopsis (Cladocera: Chydoridae) with a description of Alonopsis americana sp. nov. Int. Rev. ges. Hydrobiol., 62, 649–685.

Kuusisto, E. 1986. Ice conditions. In Waters. Atlas of Finland. Appendix 132 (Karlsson, K.-P., ed.), p. 18. National Board of Survey and Geographical Society of Finland, Helsinki.

Mäemets, A. 1961. Eesti vesikirbuliste (Cladocera) ökoloogiast ja fenoloogiast. Hüdrobiol. Uuri­mu­sed, 2, 108–158.

Pijanowska, J. & Stolpe, G. 1996. Summer diapause in Daphnia as a reaction to the presence of fish. J. Plankton Res., 18, 1407–1412.
doi:10.1093/plankt/18.8.1407

Poulsen, E. M. 1940. Biological remarks on Lepidurus arcticus Pallas, Daphnia pulex De Geer and Chydorus sphaericus O.F.M. in East Greenland. Medd. om Grøn., 131, 1–50.

Robertson, A. 1990. The population dynamics of Chydoridae and Macrothricidae (Cladocera: Crustacea) from the River Thames, U.K. Freshwater Biol., 24, 375–389.
doi:10.1111/j.1365-2427.1990.tb00717.x

Røen, U. I. 1995. Danmarks fauna 85, Gællefødder og karpelus. Dansk naturhistorisk forenig, Copenhagen.

Shan, R. K.-C. 1974. Reproduction in laboratory stocks of Pleuroxus (Chydoridae, Cladocera) under the influence of photoperiod and light intensity. Int. Rev. ges. Hydrobiol., 59,
643–666.

Slusarczyk, M. 1995. Predator-induced diapause in Daphnia. Ecology, 76, 1008–1013.
doi:10.2307/1939364

Slusarczyk, M. 2001. Food threshold for diapause in Daphnia under the threat of fish predation. Ecology, 82, 1089–1096.
doi:10.1890/0012-9658(2001)082[1089:FTFDID]2.0.CO;2

Stross, R. G. & Hill, J. C. 1965. Diapause induction in Daphnia requires two stimuli. Science, 150, 1462–1464.
doi:10.1126/science.150.3702.1462

Stross, R. G. & Hill, J. C. 1968. Photoperiod control of winter diapause in the fresh-water crustacean, Daphnia. Biol. Bull., 134, 176–198.
doi:10.2307/1539976

ter Braak, C. J. F. & Smilauer, P. 1998. CANOCO Reference Manual and User’s Guide to Canoco for Windows. Software for Canoconial Community Ordination (version 4). Microcomputer Power, Ithaca, USA.

Whiteside, M. C. 1974. Chydorid (Cladocera) ecology: seasonal patterns and abundance of populations in Elk Lake, Minnesota. Ecology, 55, 538–550.
doi:10.2307/1935145

Whiteside, M. C., Williams, J. B. & White, C. P. 1978. Seasonal abundance and patterns of chydorids, Cladocera in mud and vegetative habitats. Ecology, 59, 1177–1188.
doi:10.2307/1938231