De Michelis, Paola, Giuseppe Consolini, Roberta Tozzi, Fabio Giannattasio, Virgilio Quattrociocchi, and Igino Coco. 2019. “Features of Magnetic Field Fluctuations in the Ionosphere at Swarm Altitude”. Annals of Geophysics 62 (4):GM449. https://doi.org/10.4401/ag-7789.