1. Benes, E., Hager, F., Bolek, M., Gröschl, M., Separation of dispersed particles by ultrasonic resonance fields. Proc. Ultrasonics Intern. Conference '91 (1991) 167–170
2. Apfel, R.E., Acoustic Radiation Pressure-Principles and Applications to Separation Systems, Fortschritte der Akustik DAGA '90 (1990) 19–36
3. Hager, F., and Benes, E., Summary of all forces acting on spherical particles in a sound field, Proc. Ultrasonics Intern. Conference '91 (1991) 283–286
4. Transient Response of Fine-Particle Suspensions to Mild Planar Ultrasonic Fields;Mandralis;Fluid/particles Sepn,1990
5. Acoustic Radiation Pressure on a Compressible Sphere;Yosioka;Acustica,1955