Al-Kadhemy, Mahasin F. Hadi, et al. “Efficiency of Energy Transfer for TiO2 Nanoparticles With Fluorescein Dye”. Al-Mustansiriyah Journal of Science, vol. 29, no. 4, May 2019, pp. 134-7, https://doi.org/10.23851/mjs.v29i4.376.