Onlaor, K. ., J. . Thanurat, and W. . Sirisangtragul. “Analysis of Heavy Metal: Antimony, Barium and Lead in Gunshot Residues Produced by .38 Special Ammunition”. Thai Journal of Toxicology, vol. 31, no. 1, June 2016, pp. 9-19, https://li01.tci-thaijo.org/index.php/ThaiJToxicol/article/view/244147.