Steubing, B., Ballmer, I., Gassner, M., Gerber, L., Pampuri, L., Bischof, S., … Zah, R. (2014). Identifying environmentally and economically optimal bioenergy plant sizes and locations: a spatial model of wood-based SNG value chains. Renewable Energy, 61, 57-68. https://doi.org/10.1016/j.renene.2012.08.018