1. Principles and practices of winemaking;Boulton,1996
2. Analysis of the sugar content of fruit juices and drinks using ultrasound velocity measurements;Contreras;International Journal of Food Science and Technology,1992
3. Speed of sound in pure water;Del Grosso;The Journal of the Acoustic Society of America,1972
4. Dispersion Technology, Inc. (2007). Influence of Chemical Composition on the Acoustic Properties of Homogenous Liquids (March 2001). (Accessed 28-03-2007).
5. Instrumentation and sensors for the food industry;Kress-Rogers,2001