Identification of grain size in lanthanum-based materials using a computer program Rizki Syahputra ; Zulkarnain Zulkarnain ; Rahmi Dewi ; Vira Friska ; Apriwandi Apriwandi ; Agus Khusaeni Komunikasi Fisika Indonesia 8 Sep 2026 10.31258/jkfi.23.1.1-8
