Hussain, N., M. R. Salim, A. I. Azmi, M. Y. Mohd Noor, A. S. Abdullah, F. Ahmad, and I. Mohd Haniff. “Performance of Graphene Nanopowder-Polyvinyl Alcohol in Optical Pulse Generation at 1.5 Micron Region”. Photonics Letters of Poland, vol. 13, no. 3, Sept. 2021, pp. 55-57, doi:10.4302/plp.v13i3.1113.