1. : 2005, A&A, in preparation
2. : 1985, Handbook of stochastic methods for physics, chemistry and the natural sciences, Springer-Verlag, Berlin
3. Line Asymmetries and the Microstructure of Photospheric Magnetic Fields
4. : 1994, Solar magnetic fields: Polarized radiation diagnostics, Astrophysics and Space Science Library 189, Kluwer Academic Publishers, Dordrecht