Hargeby, A. (1990) Effect of pH, humic substancea and animal interactions on survival and physiological status of Asellus aquaticus L. amd Gammarus pulex (L.). A field experiment. Oecologia82: 348–354.
Effect of pH, humic substancea and animal interactions on survival and physiological status of _Asellus aquaticus_ L. amd _Gammarus pulex_ (L.). A field experiment