De Oliveira, J. A. P., & Ali, S. H. (2011). Gemstone mining as a development cluster: A study of Brazil’s emerald mines. Resources Policy, 36(2), 132-141. Link to Article
De Oliveira, J. A. P., & Ali, S. H. (2011). Gemstone mining as a development cluster: A study of Brazil’s emerald mines. Resources Policy, 36(2), 132-141. Link to Article