Wongso PM, Dewang S, Jumpeno EB, Firmansyah OA, Mellawati J. Experimental Study of Concrete Composites of Fly Ash and Ferronickel Slag for Gamma-Ray Shielding. jair [Internet]. 2020 Jun. 30 [cited 2025 Dec. 7];16(1):31-6. Available from: https://ejournal.brin.go.id/jair/article/view/7337