et. al., E. F.-C. . “Determination Of Consumer Surplus Using Poisson Models Through The Travel Cost Method. Case: Lizas-Ilo Well Beaches”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 7, Apr. 2021, pp. 1006-11, https://turcomat.org/index.php/turkbilmat/article/view/2710.