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Markwick-Kemper, F.; Gallagher, S. C.; Hines, D. C.; Bouwman, J. (2007). "Dust in the Wind: Crystalline Silicates, Corundum, and Periclase in PG 2112+059". Astrophysical Journal. 668 (2): L107 –L110. arXiv:0710.2225. Bibcode:2007ApJ...668L.107M. doi:10.1086/523104. S2CID10881419.
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Markwick-Kemper, F.; Gallagher, S. C.; Hines, D. C.; Bouwman, J. (2007). "Dust in the Wind: Crystalline Silicates, Corundum, and Periclase in PG 2112+059". Astrophysical Journal. 668 (2): L107 –L110. arXiv:0710.2225. Bibcode:2007ApJ...668L.107M. doi:10.1086/523104. S2CID10881419.
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Humphreys, Roberta M.; Strecker, Donald W.; Ney, E. P. (1972). "Spectroscopic and Photometric Observations of M Supergiants in Carina". Astrophysical Journal. 172: 75. Bibcode:1972ApJ...172...75H. doi:10.1086/151329.
Genge, M.J.; Larsen, J.; Van Ginneken, M.; Suttle, M.D. (February 2017). "An urban collection of modern-day large micrometeorites: Evidence for variations in the extraterrestrial dust flux through the Quaternary". Geology. 45 (2): 119–122. Bibcode:2017Geo....45..119G. doi:10.1130/G38352.1. hdl:10044/1/42484.
Markwick-Kemper, F.; Gallagher, S. C.; Hines, D. C.; Bouwman, J. (2007). "Dust in the Wind: Crystalline Silicates, Corundum, and Periclase in PG 2112+059". Astrophysical Journal. 668 (2): L107 –L110. arXiv:0710.2225. Bibcode:2007ApJ...668L.107M. doi:10.1086/523104. S2CID10881419.
"Messier Catalog". Archived from the original on November 14, 1996. Retrieved 2005-07-06.{{cite web}}: CS1 maint: bot: original URL status unknown (link)