Ruben Cornelius Siagian, Lulut Alfaris and Goldberd Harmuda Duva Sinaga (2023) “Review for Understanding Dark Matter in The Universe as Negative Energy”, Proceeding International Conference on Religion, Science and Education, 2, pp. 679–685. Available at: https://sunankalijaga.org/prosiding/index.php/icrse/article/view/980 (Accessed: 29 June 2026).