Low, S. Y. ., S. Y. . Ooi, C. L. . Cham, W. P. . Kwan, Y. H. . Pang, J. E. . Tneo, and K. M. . Ong. “Efficient Fill-Level Monitoring for Smart E-Waste Recycling ”. International Journal of Membrane Science and Technology, vol. 10, no. 3, Sept. 2023, pp. 1840-53, doi:10.15379/ijmst.v10i3.1842.