References
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- Raddum, G. G. 1979: Effects of low pH on insect larvae. — SNSF-project, IR 45/79: 58 pp. (in Norwegian with English summary).
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- Skulberg, O., 1977: Freshwater investigations of the watersheds Naustdalsvassdraget, Angedalsvassdraget and Gjengedalsvassdraget, Sogn and Fjordane, 1975–1976. — 0-48/74 NTVA, Oslo, 125 pp. (in Norwegian).
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- Surber, E. W., 1937: Rainbow trout and bottom fauna production in one mile of stream. — Trans. Amer. Fish. Soc. 66: 193–202.
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