Rai, Hakumat Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;
Rai, H., & Hill, G. (1981). Physical and chemical studies of Lago Tupé: a central Amazonian black water "Ria Lake". Internationale Revue der Gesamten Hydrobiologie, 66(1), 37-82.