N. . Senoussaoui, T. . Repmann, T. . Brammer, H. . Stiebig, and H. . Wagner, “Optical Properties of Microcrystalline Thin Film Solar Cells”, J. Ren. Energies, vol. 3, no. 1, pp. 49–56, Jun. 2000, doi: 10.54966/jreen.v3i1.910.