Fernández-Ontiveros, J. A.; López-Sanjuan, C.; Montes, M.; Prieto, M. A.; et al. The most recent burst of star formation in the massive elliptical galaxy NGC 1052. Monthly Notices of the Royal Astronomical Society Letters. 2011, 411 (1): L21–L25. Bibcode:2011MNRAS.411L..21F. arXiv:1011.2498. doi:10.1111/j.1745-3933.2010.00985.x.
Fernández-Ontiveros, J. A.; López-Sanjuan, C.; Montes, M.; Prieto, M. A.; et al. The most recent burst of star formation in the massive elliptical galaxy NGC 1052. Monthly Notices of the Royal Astronomical Society Letters. 2011, 411 (1): L21–L25. Bibcode:2011MNRAS.411L..21F. arXiv:1011.2498. doi:10.1111/j.1745-3933.2010.00985.x.
Fernández-Ontiveros, J. A.; López-Sanjuan, C.; Montes, M.; Prieto, M. A.; et al. The most recent burst of star formation in the massive elliptical galaxy NGC 1052. Monthly Notices of the Royal Astronomical Society Letters. 2011, 411 (1): L21–L25. Bibcode:2011MNRAS.411L..21F. arXiv:1011.2498. doi:10.1111/j.1745-3933.2010.00985.x.