L. Klüpfel, Keiluweit, M., Kleber, M., and Sander, M.,
“Redox Properties of Plant Biomass-Derived Black Carbon (Biochar)”,
Environmental Science & Technology, vol. 48, no. 10, pp. 5601 - 5611, 2014.
M. Gray, Johnson, M. G., Dragila, M. I., and Kleber, M.,
“Water uptake in biochars: The roles of porosity and hydrophobicity”,
Biomass and Bioenergy, vol. 61, pp. 196 - 205, 2014.