Proceedings of the 7. International Congress on Acoustics. Budapest, 18-26. Aug. 1971. Sections A-N-V: Technical acoustics - International Congress on Acoustics 4. (Budapest, 1971)
PROCEEDINGS OF THE 7th international CONGRESS ON ACOUSTICS YOL. 4. SECTIONS A-N-V (TECHNICAL ACOUSTICS) AKADÉMIAI KIADÓ, BUDAPEST 1971