Verbiscer, A. J.; Porter, S. B.; Buratti, B. J.; Weaver, H. A.; Spencer, J. R.; Showalter, M. R.; Buie, M. W.; Hofgartner, J. D. και άλλοι. (2018). «Phase Curves of Nix and Hydra from the New Horizons Imaging Cameras». The Astrophysical Journal852 (2): L35. doi:10.3847/2041-8213/aaa486. Bibcode: 2018ApJ...852L..35V.
Verbiscer, A. J.; Porter, S. B.; Buratti, B. J.; Weaver, H. A.; Spencer, J. R.; Showalter, M. R.; Buie, M. W.; Hofgartner, J. D. και άλλοι. (2018). «Phase Curves of Nix and Hydra from the New Horizons Imaging Cameras». The Astrophysical Journal852 (2): L35. doi:10.3847/2041-8213/aaa486. Bibcode: 2018ApJ...852L..35V.