Saleem DM, Riaz ahsan. Experimental Study of the Effect of Stack Area on Thermal Performance of Storage Type Water Heaters Burning Natural Gas. JPIChE [Internet]. 2011 Feb. 15 [cited 2025 Oct. 2];38(1):45-8. Available from: https://www.piche.org.pk/journal/index.php/jpiche/article/view/22