Ahmad Shahar, Mohd Lutfi, et al. “The Preliminary Studies on Preparation and Characterization of Bulk Nanoporous Zinc As a Laser Target Candidate to Generate Soft X-Ray”. International Journal of Integrated Engineering, vol. 4, no. 3, Dec. 2012, https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/623.