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Schädelin, Franziska C.; Fischer, Stefan; Wagner, Richard H. (2012). Reduction in Predator Defense in the Presence of Neighbors in a Colonial Fish. PLoS ONE, 7(5), e35833. Lawrence, Kans.: Public Library of Science 10.1371/journal.pone.0035833
Helfenstein, Fabrice; Szép, Tibor; Nagy, Zsolt; Kempenaers, Bart; Wagner, Richard H. (2008). Between-male variation in sperm size, velocity and longevity in sand martins Riparia riparia. Journal of avian biology, 39(6), pp. 647-652. Copenhagen: Munksgaard 10.1111/j.1600-048X.2008.04450.x
White, Joël; Wagner, Richard H.; Helfenstein, Fabrice; Hatch, Scott A.; Mulard, Hervé; Naves, Liliana C.; Danchin, Etienne (2008). Multiple deleterious effects of experimentally aged sperm in a monogamous bird. Proceedings of the National Academy of Sciences of the United States of America - PNAS, 105(37), pp. 13947-13952. Washington, D.C.: National Academy of Sciences NAS 10.1073/pnas.0803067105
