F. Giannattasio, P. De Michelis, G. Consolini, V. Quattrociocchi, I. Coco, and R. Tozzi, “Characterising the electron density fluctuations in the high-latitude ionosphere at Swarm altitude in response to the geomagnetic activity”, Ann. Geophys., vol. 62, no. 4, p. GM453, Dec. 2019.