K. Rimberia, I. N. Kamuti. (2015). Finite Subgroups of the Orthogonal Group in three dimensions and their Poles. International Journal of Mathematics and Statistics Studies 3:1, 27-42. ISSN 2053-2229 (Print), ISSN 2053-2210 (Online). https://www.eajournals.org/journals/international-journal-of-mathematics-and-statistics-studies-ijmss/vol-3issue-3-may-2015/