Guzmán-Sánchez, J. and Mwampamba, T.H. 2020. Is informal charcoal production necessarily unsustainable? A comparison of three oak management systems in the central Mexican Sierras. Renewable energy, biomass & sustainability. 2, 1 (Jun. 2020), 5–6. DOI:https://doi.org/10.56845/rebs.v2i1.18.