Hellier, Coel; et al. (2009-08-27). “An orbital period of 0.94 days for the hot-Jupiter planet WASP-18b”. Nature (Nature Publishing Group) 460 (7259): 1098-1100. Bibcode: 2009Natur.460.1098H. doi:10.1038/nature08245.
Hellier, Coel; et al. (2009-08-27). “An orbital period of 0.94 days for the hot-Jupiter planet WASP-18b”. Nature (Nature Publishing Group) 460 (7259): 1098-1100. Bibcode: 2009Natur.460.1098H. doi:10.1038/nature08245.