Extending the analysis on the best solar activity proxy for long-term ionospheric investigations

ZOSSI, B.S., MEDINA, F. D., TAN JUN, G., LAŠTOVIČKA, Jan, DURAN, T., FAGRE, M., BARBAS, B.F.H., ELIAS, A. G. Extending the analysis on the best solar activity proxy for long-term ionospheric investigations. Proceedings of the Royal Society A-Mathematical Physical and Engineering Sciences. 2023, 479(2276), 20230225. ISSN 1364-5021. E-ISSN 1471-2946. Available: doi: 10.1098/rspa.2023.0225.