Помогите пожалуйста найти 2 статьи из журнала Journal of the Acoustical Society of America:
1 Emmanuel P. Papadakis
Correction for Diffraction Losses in the Ultrasonic Field of a Piston Source
J. Acoust. Soc. Am. Volume 31, Issue 2, pp. 150-152 (1959)
- DOI:
http://dx.doi.org/10.1121/1.1907684
Diffraction Effects in the Ultrasonic Field of a Piston Source
J. Acoust. Soc. Am. Volume 30, Issue 7, pp. 602-605 (1958)
- DOI:
http://dx.doi.org/10.1121/1.1909706