Bleich, V. C., Chun, C. S. Y., Anthers, R. W., Evans, T. E., & Fischer, J. K. (2001). VISIBILITY BIAS AND DEVELOPMENT OF A SIGHTABILITY MODEL FOR TULE ELK. Alces: A Journal Devoted to the Biology and Management of Moose, 37(2), 315–327. Retrieved from https://www.alcesjournal.org/index.php/alces/article/view/585