[1]
L. Martínez-Carrasco, M. Brugarolas, A. Martínez-Poveda, and J. J. Ruiz-Martínez, “Comparing hypothetical versus non-hypothetical methods for measuring willingness to pay in a food context”, Span. j. agric. res., vol. 13, no. 4, p. e0109, Dec. 2015.