Kuindersma, M., and A. Behar. “A Computer Program for the Calculations in the CSA Standard Z107.56 `Procedures for the Measurement of Occupational Noise exposure’”. Canadian Acoustics, vol. 16, no. 1, Mar. 1988, pp. 29-36, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/586.