F. VALACH and A. PRIGANCOVÁ, “Neural network model for Kp prediction based on one-hour averages of solar wind data”, Contrib. Geophys. Geod., vol. 36, pp. 61–71, May 2021, Accessed: Feb. 04, 2026. [Online]. Available: https://journals.savba.sk/index.php/cgg/article/view/5035