- Authors: Verheijen, F.G.A., Jeffery, S., Bastos, A.C., van der Velde, M., Diafas, I.
- Título: Scientific discussion at the convening: Biochar Systems for Small-Scale Farmers in Sub-Saharan Africa and South Asia
- Conference Title: The Bill and Melinda Gates Foundation, HQ
- Conference Location: Seattle, USA
- Conference Date: 1st July
- Year Published: 2010