Hashmi, D. R., Siddiqui, I., Khan, F. A., Shareef, A., Shaikh, G. H. and Munshi, A. B. (2009) “Determination of Copper, Manganese, Nickel and Zinc in Different Cigarette Brands Available in Pakistan: Determination of Metals in Different Cigarettes”, Biological Sciences - PJSIR, 52(6), pp. 307–311. Available at: https://v2.pjsir.org/index.php/biological-sciences/article/view/573 (Accessed: 3 May 2024).