“The Food Safety of Livestock Products (Meatball, Corned Beef, Beef Burger and Sausage) Studied from Heavy Metal Residues Contamination”. Animal Production: Indonesian Journal of Animal Production 12, no. 1 (May 18, 2011). Accessed October 29, 2026. https://jap.fapet.unsoed.ac.id/index.php/JAP/article/view/1279.