Albion, K., L. Briens, C. Briens, and F. Berruti. “Detection of Conditions Leading to Breakage of Pharmaceutical Tablets in Pneumatic Transport”. Canadian Acoustics, vol. 33, no. 3, Sept. 2005, pp. 24-25, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1727.