Martínez-Carrasco L, Brugarolas M, Martínez-Poveda A, Ruiz-Martínez JJ. Comparing hypothetical versus non-hypothetical methods for measuring willingness to pay in a food context. Span. j. agric. res. [Internet]. 2015Dec.2 [cited 2024Apr.27];13(4):e0109. Available from: https://sjar.revistas.csic.es/index.php/sjar/article/view/8233