Firman, Risman, et al. “Optimization of High Early-Strength Concrete Mix Design for Structural Applications in the BJ. Habibie Stadium Construction Project”. Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan, vol. 10, no. 2, Sept. 2025, pp. 123-32, doi:10.30736/cvl.v10i2.1424.