SUYANTO, Damar Adhiwidya; OKTAVIANA, Aditya Tri; SYVÄJÄRVI, Mikael; SARDJONO, Yohannes; WIJAYA, Gede Sustresna; TRIATMOKO, Isman Mulyadi. Shielding innovation for health security: A PHITS-based optimization of Portland material for proton therapy. International Journal of Applied Mathematics, Sciences, and Technology for National Defense, [S. l.], v. 3, n. 2, p. 103–116, 2025. DOI: 10.58524/app.sci.def.v3i2.841. Disponível em: https://journal.foundae.com/index.php/JAS-ND/article/view/841. Acesso em: 12 jan. 2026.