Riri Rezeki Hariani; Muhammad Arif Nasution; Muhammad Sutan Agung; Ira Thania Rasjidi; Arifin Saleh; Muhammad Fathin Abdul Fachri. Efficiency Analysis of Flood Mitigation Policies in North Sumatra in 2025: An Economic Analysis of Law Perspective . JCPA 2026, 4, 112-122.