“EXPLICIT COMPUTATION OF COMMUTATOR SUBGROUPS IN SIX-DIMENSIONAL TORSION-FREE BIEBERBACH GROUPS WITH QUATERNION POINT GROUP OF ORDER EIGHT”. Jurnal Teknologi (Sciences & Engineering) 88, no. 4 (June 16, 2026): 893–902. Accessed October 3, 2026. https://journals.utm.my/jurnalteknologi/article/view/25421.