ZIMMER, Alexandre Gilliot, Mickael Tresse, Manuel Stein, Nicolas Tillous, Kessein Data_File_3.csv Tabulated real (n) and imaginary (k) parts of the complex refraction index of Na0.35WO3 vs energy (eV) and wavelength (nm) Thin Films and Other Optical Design and Fabrication 2019-02-15
    https://opticapublishing.figshare.com/articles/dataset/Data_File_3_csv/7519691
10.6084/m9.figshare.7519691.v1