A Optimization of Direction Finder in Disclosing Cases of Threatening By Jatanras Unit, Criminal Research Unit, Surabaya City Police Office. TANGGON [Internet]. 2024 Apr. 30 [cited 2026 Oct. 15];13(1):20-31. Available from: https://journal.akpol.ac.id/index.php/tanggonkosala/article/view/1491