Wei, W., L. Jiang, and F. Mian. “MEMS Retroreflector Fabrication and Packaging”. International Journal For Research In Electronics & Electrical Engineering (ISSN: 2208-2735), Vol. 4, no. 3, Mar. 2018, pp. 01-07, https://gnpublication.org/index.php/eee/article/view/372.