Edy Saptono, Agus Sudarya. The IBM Model in Border Management of The Riau Islands Province to Increase Investment Competitiveness to Support State Defense: Pengelolaan Perbatasan Provinsi Kepulauan Riau untuk Meningkatkan Daya Saing Investasi . IJHESS [Internet]. 2024 Oct. 14 [cited 2026 May 1];4(2). Available from: https://ijhess.com/index.php/ijhess/article/view/1298