[1]
Esguerra, J.P. 2006. Ex-planets and exo-planets: Why Pluto is not a planet anymore. Proceedings of the Samahang Pisika ng Pilipinas, 24(1), SPP-2006-INV-ST-04. URL: https://proceedings.spp-online.org/article/view/SPP-2006-INV-ST-04.