R, S.; R, V.; R, V.; J, R. Transesterification of Waste Cooking Oil Catalysed by Crystalline Copper Doped Zinc Oxide Nanocatalyst. JOURNAL OF ADVANCES IN CHEMISTRY, [S. l.], v. 12, n. 27, p. 5798–5808, 2017. DOI: 10.24297/jac.v12i27.5286. Disponível em: https://www.rajpub.com/index.php/jac/article/view/5286. Acesso em: 20 may. 2024.