Haile, A. “Determinants of Household’s Willingness to Pay for Improved Mirt Stove in Cases of Semi Urban Areas of Gurage Zone: An Application of Contingent Valuation Method”. GPH-International Journal of Agriculture and Research, Vol. 4, no. 02, Mar. 2021, pp. 39-51, https://gphjournal.org/index.php/ar/article/view/370.