Mekonnen, Andualem Goshu. “A Seemingly Unrelated Bivariate Probit Model to Estimate the Non-Use Value of Wildlife”. Journal of Wildlife and Biodiversity 9, no. 1 (October 20, 2024): 94–112. Accessed April 30, 2025. https://www.wildlife-biodiversity.com/index.php/jwb/article/view/772.