Cavka A., Alriksson B., Rose S.H., Van Zyl W.H., Jönsson L.J. Biorefining of wood: Combined production of ethanol and xylanase from waste fiber sludge. 2011. Journal of Industrial Microbiology and Biotechnology. 38. 8. 891-899. 10.1007/s10295-010-0856-9.