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Aerni, V.; Brinkhof, M.W.G.; Wechsler, B.; Oester, H.; Fröhlich, E. (2005). Productivity and mortality of laying hens in aviaries: a systematic review. World's poultry science journal, 61(1), pp. 130-142. Cambridge University Press 10.1079/WPS200450
Brinkhof, M.W.G.; Heeb, P; Kolliker, M; Richner, Heinz (1999). Immunocompetence of nestling great tits in relation to rearing environment and parentage. Proceedings of the Royal Society. Series B - biological sciences, 266(1435), pp. 2315-2322. London: Royal Society of London 10.1098/rspb.1999.0925
