1. Gandorfer, A. 2000, The Second Solar Spectrum: A High Resolution Polarimetric Survey of Scattering Polarization at the Solar Limb in Graphical Representation, Vol. I: 4625 Å to 6995 Å (Zürich: vdf ETH), ISBN 3 7281 2764 7
2. Gandorfer, A. 2002, The Second Solar Spectrum: A High Resolution Polarimetric Survey of Scattering Polarization at the Solar Limb in Graphical Representation, Vol. II: 3910 Å to 4630 Å (Zürich: vdf ETH), ISBN 3 7281 2844 4