Zhao Z, Zhang Y, Holmes DE, Dang Y, Woodard TL, Nevin KP, Lovley DR.  2016.  Potential enhancement of direct interspecies electron transfer for syntrophic metabolism of propionate and butyrate with biochar in up-flow anaerobic sludge blanket reactors.. Bioresour Technol. 209:148-56.

Zhao Z, Zhang Y, Woodard TL, Nevin KP, Lovley DR.  2015.  Enhancing syntrophic metabolism in up-flow anaerobic sludge blanket reactors with conductive carbon materials.. Bioresour Technol. 191:140-5.