Hussain, S., saleem, K., shahzad, khurram, akhtar, N. ahmed, & chughtai, arshad. (2014). Physical Parameters Affecting Thermal Conversion of Low-grade Coal and Biomass for Gasification. Journal of the Pakistan Institute of Chemical Engineers, 42(2), 59–68. Retrieved from http://piche.org.pk/journal/index.php/jpiche/article/view/166