Ordoñez, D.M.T. 2025. Zipf’s law deviations for Philippine cities and municipalities: An analysis using the 2020 Cities and Municipalities Competitiveness Index. Proceedings of the Samahang Pisika ng Pilipinas, 43(1), SPP-2025-PC-18. URL: https://proceedings.spp-online.org/article/view/SPP-2025-PC-18.