E. Bourdin, F. Z. Henari, W. J. Blau, and J. M. Kelly, “Linear and nonlinear optical spectroscopy of CdS nanoparticles in Nafion membranes”, JTIT, vol. 1, no. 1-2, pp. 29–36, Jun. 2000, doi: 10.26636/jtit.2000.1-2.16.