Haaland, S. E. Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Bjoland, L. M., Chen, X., Jin, Y., Reimer, A. S., Skjæveland, Å., Wessel, M. R., et al. (2015). Interplanetary magnetic field and solar cycle dependence of Northern Hemisphere F region joule heating. Journal Geophysical Research, 120, 1478-1487. doi:10.1002/2014JA020586.