1. Ajrapetjanz, E. Sh., Konstantinov, A. I.: A study of nervous mechanisms of echolocation of bats. Questions of bionics, p. 445?453. Moscow: Nauka 1967.
2. Goodwin, G. G., Greenhall, A. M.: A review of the bats of Trinidad and Tobago. Bull. Amer. Mus. Nat. Hist. 122, 191?301 (1961).
3. Griffin, D. R.: Listenig in the dark. New Haven: Yale University Press 1958.
4. ?: Comparative studies of the orientation sounds of bats. Zool. Soc. London Symposium 7, 61?72 (1962).
5. ?, Dunning, D. C., Cahlander, D., A., Webster, F. A.: Correlated orientation sounds and ear movements of horseshoe bats. Nature (Lond.) 196, 1185?1187 (1962).