KOUADIO AKG, BALLO Z. Consideration of zero values in willingness to pay: A case study of rice farmers in the Korhogo area. IJAFAME [Internet]. 10 oct. 2022 [cité 27 oct. 2026];3(5-2):565-76. Disponible sur: https://revue.ijafame.com/index.php/home/article/view/632