Abdou, A., and R. Guy. “Acoustical Measurement & Computational & Electro-Acoustics. Three Dimensional Transient Sound Intensity Measurements for Comprehensive Room-Acoustic Evaluation”. Canadian Acoustics, vol. 21, no. 3, Sept. 1993, pp. 115-6, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/801.