S. Hassan, M. S. Yusof, Z. Embong, and M. I. Maksud, “A study of printed La2O3 on carbon-glass substrate for micro-flexographic printing process using Angle Resolve X-Ray Photoelectron Spectroscopy (ARXPS) analysis”, jnrt, vol. 17, no. 01, pp. 8-14, Jun. 2020.