Goymann, Wolfgang Abteilung Gahr, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Goymann, W., & Hofer, H. (2010). Mating systems, social behaviour and hormones. In P. Kappeler (Ed.), Animal behaviour: Evolution and mechanisms (pp. 465-501). Berlin, Heidelberg: Springer.