Wiggins, S. M., McDonald, M. A., Munger, L. M., Moore, S. E., & Hildebrand, J. A. (2004). Waveguide propagation allows range estimates for north pacific right whales in the bering sea. Canadian Acoustics, 32(2), 146–154. Retrieved from https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1598