ZULKARNAIN , Fahrizal; AINURRASYID. Ultimate Load and Workability Optimisation of Coconut-Shell Plain-Concrete Beams Incorporating Sikament-NN. Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan, [S. l.], v. 11, n. 2, p. 188–197, 2026. DOI: 10.30736/cvl.v11i2.1741. Disponível em: https://jurnalteknik.unisla.ac.id/index.php/CVL/article/view/1741. Acesso em: 9 oct. 2026.