POLYCYCLIC PRESENTATIONS OF THE TORSION FREE SPACE GROUP WITH QUATERNION POINT GROUP OF ORDER EIGHT. Jurnal Teknologi, [S. l.], v. 77, n. 33, 2015. DOI: 10.11113/jt.v77.7020. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/7020.. Acesso em: 4 may. 2024.