Mandea, M., & Korte, M. (2011). Geomagnetic Observations and Models. Springer Netherlands. https://doi.org/10.1007/978-90-481-9858-0

Mandea, M., and Monika Korte. Geomagnetic Observations and Models. Dordrecht: Springer Netherlands, 2011. https://doi.org/10.1007/978-90-481-9858-0.

Mandea, M., and Monika Korte. Geomagnetic Observations and Models. Springer Netherlands, 2011. https://doi.org/10.1007/978-90-481-9858-0.