Pham Thi Thu, H.; Christine Amory, M.; Le Huy, M.; Susumu, S.; Nguyen Thanh, D.; Luong Thi, N.; Luu Viet, H.; Nguyen Chien, T.; Nguyen Ha, T.; Michi, N.; Septi, P. Occurrence Rate of Equatorial Spread F and GPS ROTI in the Ionospheric Anomaly Region over Vietnam. Vietnam J. Earth Sci. 2024, 46, 553-569.