Dynamical complexity in Swarm electron density time series using Block entropyG. Balasis, C. Papadimitriou, A. Z. Boutsi, I. A. Daglis, O. Giannakis, A. Anastasiadis, P. De Michelis and G. ConsoliniEPL, 131 6 (2020) 69001DOI: https://doi.org/10.1209/0295-5075/131/69001