Schwabl, Hubert Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Schwabl, H. (1988). Endocrine aspects of partial migration. In H. Ouellet (Ed.), Acta XIX Congressus Internationalis Ornithologici (pp. 1722-1737). Ottawa: University of Ottawa Press.