1. SCHOTT AG: Interactive Abbe diagram, https://www.schott.com/advanced_optics/english/knowledge-center/technical-articles-and-tools/abbe-diagramm.html (2018)
2. N.G. Van Kampen, F. Lurçat: Causalité et relations de Kramers-Kronig, J. Phys. Radium 22, 179–191 (1961)
3. V. Lucarini, J.J. Saarinen, K.-E. Peiponen, M.E. Vartiainen: Kramers-Kronig Relations in Optical Materials (Springer, Berlin, Heidelberg 2005)
4. J.F. Ogilvie, G.J. Fee: Equivalence of Kramers-Kronig and Fourier transforms to convert between optical dispersion and optical spectra, MATCH Commun. Math. Comput. Chem. 69, 249–262 (2013)
5. M. Born, E. Wolf: Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light (Cambridge Univ. Press, Cambridge 1999)