NASUTION, Habibi Azka; GEA, Mitra Lestari; NASUTION, Budiman. NUMERICAL ANALYSIS OF CONCRETE-FLY ASH AND CONCRETE-OPC IN MULTI- STOREY BUILDINGS DURING EARTHQUAKES. EINSTEIN (e-Journal), [S. l.], v. 13, n. 1, p. 49–55, 2025. DOI: 10.24114/eins.v13i1.48769. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/einsten/article/view/48769. Acesso em: 12 oct. 2025.