Pagulayan, FP, JME Alabado, CJR Ocsina and RC Ordinario 2021. Assessment of tropical cyclone frequency over Western North Pacific and North Indian Ocean from 1991‒2020. Proceedings of the Samahang Pisika ng Pilipinas (Philippines, 2021), SPP-2021-PB-15. URL: https://proceedings.spp-online.org/article/view/SPP-2021-PB-15.