Rost, Roland Vogelwarte Radolfzell, Radolfzell, Max Planck Institut für Ornithologie, Max Planck Society;
Rost, R. (1990). Hormones and behavior: A joint examination of studies on seasonal-variation in song production and plasma-levels of testosterone in the great tit Parus-major. Journal für Ornithologie, 131(4), 403-411. doi:10.1007/bf01639816.