Maitlo, Ghulamullah, 		Mahar, Rasool, 		Bhatti, Zulfiqar Ali, AND 		Nazir, Imran.
" A Comprehensive Literature Review of Thermochemical Conversion of Biomass for Syngas Production and Associated Challenge" <em>Mehran University Research Journal of Engineering and Technology</em> [Online], Volume 38 Number 2 (1 April 2019)