Books and Journals

J. Krautkraemer & H. Krautkraemer
“Ultrasonic Testing of Materials” 
4. Ed. 1990
Springer-Verlag

Lawrence C. Lynnworth
“Ultrasonic Measurements for Process Control” 
Academic Press, Inc.. 1989

“Experiments in Fluids”, Vol. 26, 1999
Springer-Verlag