1. 2006. A multi-criteria evaluation methodology for economically and environmentally sustainable coffee industry. Doctorate thesis, Dalhousie University: Halifax, Nova Scotia, Canada.
2. 2005. Application of industrial ecology to the Central American coffee industry. In Proceedings of the Second Exergy, Energy and Environment Symposium, Kos, Greece, Paper IEEES2-006.
3. An integral framework for sustainability assessment in agro-industries: application to the Costa Rican coffee industry
4. Pesticide taxation and multi-objective policy-making: farm modelling to evaluate profit/environment trade-offs
5. 2001. Can an Agricultural Commodity be ‘De-Commodified’? Discussion Paper 380. Institute of Development Studies: Brighton, UK.