Simons, D. G., C. Van Moll, and M. Snellen. “A Two-Stage Method for Determining the Position and Corresponding Precision of Marine Mammal Sounds”. Canadian Acoustics, vol. 32, no. 2, June 2004, pp. 117-24, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1594.