"Sanghee Lee","Observational Studies of Stellar Magnetic Activity Variability using Chromospheric Lines",,,,,,,2023,June "Sanghee Lee","Observational Studies of Stellar Magnetic Activity Variability using Chromospheric Lines",,,,,,,2023,June "Sanghee Lee","Observational Studies of Stellar Magnetic Activity Variability using Chromospheric Lines",,,,,,,2023,June "Sanghee Lee","Observational Studies of Stellar Magnetic Activity Variability using Chromospheric Lines",,,,,,,2023,June