1. Shannon CE, Weaver W. 1949 The mathematical theory of communication. Urbana, IL: University Illinois Press.
2. Hauser MD. 1996 The evolution of communication. Cambridge, MA: MIT Press.
3. Bradbury JW, Vehrencamp SL. 1998 Principles of animal communication. Sunderland, MA: Sinauer.
4. Greenfield MD. 2002 Signalers and receivers: mechanisms and evolution of arthropod communication. Oxford, UK: Oxford University Press.
5. The central importance of information in studies of animal communication