1. Airapetianz, E. Sh. and Konstantinov, A.I., 1970, Echolocation in Nature, Nauka, Leningrad (in Russian).
2. Airapetianz, E. Sh. and Konstantinov, A.I., 1970, Echolocation in Animais. Nauka, Leningrad. English Translation. Israel Program of Scientific Translations, Jerusalem, 1973.
3. Airapetianz, E. Sh. and Konstantinov, A.I., 1974, Echolocation in Nature. Nauka, Leningrad (in Russian).
4. Airapetianz, E. Sh. and Konstantinov, A.I., 1974, Echolocation in Nature. Nauka, Leningrad. English Translation. Joint Publications Research Service, No. 63328, 1000 North Glebe Road, Arlington, Virginia 22201.
5. Airapetianz, E. Sh. and Konstantinov, A.I., 1965, The problem of the role of echolocation in spatial analysis by bats. Bionika, p. 334, Nauka, Moscow (in Russian).