Khawaja, A. S., A. Umer, G. Mustafa, A. Shabbir, and N. Ullah. “Selection of Suitable Method for the Synthesis of Vanadium oxide/Titania (V2O5/TiO2) Catalyst on Different Supports and Its Characterizations”. Journal of the Pakistan Institute of Chemical Engineers, vol. 45, no. 2, Dec. 2017, http://piche.org.pk/journal/index.php/jpiche/article/view/363.