1. Beckers, J. M., Bridges, C. A., & Gilliam, L. B. 1976, A High Resolution Spectral Atlas of the Solar Irradiance from 380 to 700 Nanometers (Massachusetts: Air Force Geophysics Laboratory)
2. Some THEMIS-MTR observations of the second solar spectrum (2000 campaign)
3. Cox, A. N. 2000, Allen's Astrophysical Quantities, 4th ed. (New York: Springer Verlag and AIP Press)
4. Gandorfer, A. 2000, The Second Solar Spectrum (Zürich: vdf Hochschulverlag AG an der ETH)