1. Introduction: the making of illicitness;Abraham,2005
2. Analysis for Stakeholders on Formalization in the Artisanal and Small-Scale Gold Mining Sector Based on Experiences in Latin America, Africa, and Asia;Barreto,2011
3. The World in a Grain_ the Story of Sand and How it Transformed Civilization;Beiser,2018
4. Sand, gravel, and UN sustainable development goals: conflicts, synergies, and pathways forward;Bendixen;One Earth,2021