M. M. S. Missen, D. M. Khan, and M. M. Aqib, “A Comparative Study of Diversity in Search Results of Search Engines”, jictra, pp. 1–7, Dec. 2018, Accessed: Aug. 25, 2026. [Online]. Available: https://www.jictra.com.pk/index.php/jictra/article/view/2