Rif’an Amrozi, and Subiono. “Pembuktian Sifat Non-Hausdorff Dari Grup Lie GL(n,C) Bertindak Pada M(n,C)”. Limits: Journal of Mathematics and Its Applications, vol. 17, no. 1, July 2020, pp. 35-50, https://journal.its.ac.id/index.php/limits/article/view/5435.