1. Density measurement for process control;McHale;Ultrasonics,1988
2. Possible applications for an ultrasonic acoustic impedance probe;Randall;Leatherhead Food RA Research Report,1987
3. Fundamentals of Ultrasonics;Blitz,1963
4. Tables of Physical and Chemical Constants;Kaye,1986
5. Numerical calculation of the diffraction corrections for the precise measurement of ultrasound phase velocity;Khimunin;Acustica,1975