Chang, Y., K. Zhao, and B. Pesic. “SELECTIVE LEACHING OF NICKEL FROM PREREDUCED LIMONITIC LATERITE UNDER MODERATE HPAL CONDITIONS- Part I: Dissolution”. Journal of Mining and Metallurgy, Section B: Metallurgy, Vol. 52, no. 2, Oct. 2016, pp. 127-34, https://aseestant.ceon.rs/index.php/jmm/article/view/9390.