Holzwarth, Volkmar IMPRS on Physical Processes in the Solar System and Beyond, Max Planck Institute for Solar System Research, Max Planck Society;
Holzwarth, V. (2008). Flow instabilities of magnetic flux tubes III. Toroidal flux tubes. Astronomy and Astrophysics, 485, 351-361. doi:10.1051/0004-6361:200809564.