Haaland, S. E. Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Teh, W.-L., Sonnerup, B. U. Ö., Paschmann, G., & Haaland, S. E. (2011). Local structure of directional discontinuities in the solar wind. Journal Geophysical Research, 116: A04105. doi:10.1029/2010JA016152.