Buchkapitel
Gilder, S. A.; Wack, M. R.; Kronberg, E. A.; Prabhu, A.: Solar Cycle Variations in Differential Intrumental Responses from Ground-Based Geomagnetic Records. In: Geomagnetism, Aeronomy and Space Weather: A Journey from the Earth's Core to the Sun, S. 71 - 83 (Hg. Mandea, M.; Korte, M.; Yau, A.; Petrovsky, E.). Cambridge Univ. Press, Cambridge U.K. (2019)