1. L. M. Fink, Theory of Discrete-Message Transmission (Sovetskoe Radio, Moscow, 1970), pp. 573–586 [in Russian].
2. E. J. Baghdady, in Lectures on Communication System Theory, Ed. by E. J. Baghdady (McGraw-Hill, New York, 1961; Mir, Moscow, 1964).
3. A. A. Kharkevich, Fighting against Inference (Nauka, Moscow, 1965) [in Russian].
4. I. S. Andronov and L. M. Fink, Discrete-Message Transmission along Parallel Channels (Sovetskoe Radio, Moscow, 1971), pp. 304–342 [in Russian].
5. Yu. V. Zakharov and V. P. Kodanev, Akust. Zh. 40, 799 (1994) [Acoust. Phys. 40, 707 (1994)].