Sustainable Biochar Production Part 1, Part 2 and Part 3, Ryan D. Hottle (2010)
North American Biochar Keynote Address, Susan Solomon (2009)
Biochar Systems Science, Johannes Lehmann (2009)
Discovering Terra Preta Australis, Adriana Downe (2009)
Permanency and Long Term Changes of Biochar, Johannes Lehmann et al (2009)
An Introduction to Biochar, Jim Annotte (2009)
