S.  Velu, Suzuki, K., Vijayaraj, M., Barman, S., and Gopinath, C. S., ?In situ XPS investigations of Cu1-xNixZnAl-mixed metal oxide catalysts used in the oxidative steam reforming of bio-ethanol?, Applied Catalysis B - Environmental, vol. 55, no. 4, pp. 287-299, 2005.

V. V.  Bokade and Yadav, G. D., ?Heteropolyacid supported on montmorillonite catalyst for dehydration of dilute bio-ethanol?, Applied Clay Science, vol. 53, no. 2, pp. 263-271, 2011.