Remijan, Anthony J.; J. M. Hollis; F. J. Lovas; M. A. Cordiner; T. J. Millar; A. J. Markwick-Kemper; P. R. Jewell (July 20, 2007). „Detection of C8H− and Comparison with C8H toward IRC +10 216“. The Astrophysical Journal. 664 (1): L47–L50. Bibcode:2007ApJ...664L..47R. doi:10.1086/520704.
Brünken, S.; H. Gupta; C. A. Gottlieb; M. C. McCarthy; P. Thaddeus (July 20, 2007). „Detection of the Carbon Chain Negative Ion C8H− in TMC-1“. The Astrophysical Journal. 664 (1): L43–L46. Bibcode:2007ApJ...664L..43B. doi:10.1086/520703.
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Remijan, Anthony J.; J. M. Hollis; F. J. Lovas; M. A. Cordiner; T. J. Millar; A. J. Markwick-Kemper; P. R. Jewell (July 20, 2007). „Detection of C8H− and Comparison with C8H toward IRC +10 216“. The Astrophysical Journal. 664 (1): L47–L50. Bibcode:2007ApJ...664L..47R. doi:10.1086/520704.
Brünken, S.; H. Gupta; C. A. Gottlieb; M. C. McCarthy; P. Thaddeus (July 20, 2007). „Detection of the Carbon Chain Negative Ion C8H− in TMC-1“. The Astrophysical Journal. 664 (1): L43–L46. Bibcode:2007ApJ...664L..43B. doi:10.1086/520703.