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Bakhvalov N S, Zabolotskaya E A & Zhileikin Y M. (1987). Nonlinear theory of sound beams. : .
Bakhvalov N S, Zabolotskaya E A and Zhileikin Y M. 1987. Nonlinear theory of sound beams. : .
Bakhvalov N S, Zabolotskaya E A and Zhileikin Y M. (1987). Nonlinear theory of sound beams. : .
Bakhvalov N S, Zabolotskaya E A and Zhileikin Y M. Nonlinear theory of sound beams. : . 1987.