Textbooks on acoustic communication in animals
BEECHER, M. D.: Spectrographic Analysis of Animal Vocalizations: Implications of the "Uncertainty Principle". Bioacoustics Vol.1, No 2/3, AB Academic Publishers, 1988.
BRADBURY, J.W.; S.L. VEHRENCAMP: Principles of animal communication. Sinauer Associates, Massachusetts 1998. .
CATCHPOLE, C.K.; SLATER, P.J.B.: Bird Song: Biological themes and variations. Cambridge University Press 1995.
HOPP,S.L.; M.J. OWREN; C.S. EVANS.(ed):
Animal Acoustic Communication. Springer-Verlag Berlin/Heidelberg 1998. .