Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.Vizier query form
Todorov, Kamen O. et al. (2012). "Warm Spitzer Observations of Three Hot Exoplanets: XO-4b, HAT-P-6b, and HAT-P-8b". The Astrophysical Journal746 (1): 111. doi:10.1088/0004-637X/746/1/111. Bibcode: 2012ApJ...746..111T.
Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.Vizier query form
Todorov, Kamen O. et al. (2012). "Warm Spitzer Observations of Three Hot Exoplanets: XO-4b, HAT-P-6b, and HAT-P-8b". The Astrophysical Journal746 (1): 111. doi:10.1088/0004-637X/746/1/111. Bibcode: 2012ApJ...746..111T.
Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.Vizier query form