Measuring Willingness to Pay for Environmental Attributes in Seafood
James Hilger, Eric Hallstein, Andrew W. Stevens, Sofia Villas-Boas
Environmental and Resource Economics, vol. 73, 2019, p. 307-332.

Can Household Consumers Save the Wild Fish? Lessons from a Sustainable Seafood Advisory
Sofia Villas-Boas, Eric Hallstein
Journal Of Environmental Economics And Management, vol. 66, 2013, p. 52-71.