Geochemical characteristics of Anak Krakatau’s (Indonesia) lava in the past half-century - Nurfiani, Dini; Ismail, Taufik; Pratama, Aditya; Rukmini, Niken Angga; Abdurrachman, Mirzam; Kurniawan, Idham Andri; Draniswari, Windi Anarta; Banggur, Wilfridus Ferdinando Supriyadi; Suryanata, Putu Billy (Frontiers in Earth Science, 2024)