1. Observations of an acoustic aerosol particle transducer;MILLS;Journal of Sound and Vibration,1999
2. An acoustic particle counter-premilinary results;LANGER;Journal of Colloid Science,1965
3. ENGINEERING TECHNOLOGY INCORPORATED, 1997, Comprehensive Summary Report on Detection of Infrared and Millimeter Wavelength Screening Aerosols: Acoustical Systems Development, Edgewood Research Development Engineering Center, Aberdeen Proving Ground, MD
4. G. LANGER, 1966, Fifth Technical Meeting and Exhibit of American Association for Contamination Control, Houston, TX, A further development of an acoustic particle counter
5. The Langer acoustic counter;LANGER;Staub-Reinhalt Luft,1968