Combining averting behavior and contingent valuation data: an application to drinking water treatment in Brazil
Márcia Rosado, Maria Cunha e Sa, Maria Ducla Soares, Luis Catela Nunes
Environment and Development Economics, vol. 11, 2006, p. 729-746.

Consistency in Mixed Demand Systems: Contingent Valuation and Travel Cost Data
Maria Cunha e Sa, Maria Ducla Soares, Luis Catela Nunes, Philippe Polome
American Journal of Agricultural Economics, vol. 86, 2004, p. 444-454.

Identifying Non-consistent Choice Behavior in Recreation Demand Models
Luis Catela Nunes, Maria Cunha e Sa, Maria Ducla Soares, Márcia Rosado, Brett Day
Economics Letters, vol. 72, 2001, p. 403-410.

Specification Tests for Mixed Demand Systems with an Emphasis on Combining Contingent Valuation and Revealed Data
Maria Cunha e Sa, Maria Ducla Soares
Journal Of Environmental Economics And Management, vol. 38, 1999, p. 215-233.

Testing for Rationality: The Case of Discrete Choice Data
Luis Catela Nunes, Maria Cunha e Sa, Maria Ducla Soares
Economics Letters, vol. 60, 1998, p. 255-261.

The Determinants of Pesticide Regulation: A Statistical Analysis of EPA Decision Making
Maureen Cropper, William Evans, Stephen Berardi, Maria Ducla Soares, Paul Portney
Journal of Political Economy, vol. 100, 1992, p. 175-197.