1. P. A. Nelson and S. J.Elliot, Active Control of Sound, Academic Press, London (1991).
2. S. J. Elliott, Signal Processing for Active Control, Academic Press. London (2001).
3. Yu. I.Bobrovnitskiĭ, Acoust. Phys., 52, 5, 513 (2006).
4. Yu. I.Bobrovnitskĭ, Acoust. Phys., 49, 6, 620 (2003).
5. V. V. Arabadzhi, Acoust. Phys., 52, 5, 505 (2006).