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Oosterloo, T.; Morganti, R.; Sadler, E. M.; Ferguson, A.; van der Hulst, J.M.; Jerjen, H. (2004). P.-A. Duc; J. Braine; E. Brinks (eds.). Tidal Remnants and Intergalactic HII Regions. International Astronomical Union Symposium. Vol. 217. Astronomical Society of the Pacific. p. 486. arXiv:astro-ph/0310632. Bibcode:2004IAUS..217..486O. doi:10.1017/S0074180900198249.
Tullmann, Ralph; Gaetz, Terrance J.; Plucinsky, Paul P.; et al. (2008). "The chandra ACIS survey of M33 (ChASeM33): investigating the hot ionized medium in NGC 604". The Astrophysical Journal. 685 (2): 919–932. arXiv:0806.1527. Bibcode:2008ApJ...685..919T. doi:10.1086/591019. S2CID1428019.
Majaess, D. J.; Turner, D.; Lane, D.; Moncrieff, K. (2008). "The Exciting Star of the Berkeley 59/Cepheus OB4 Complex and Other Chance Variable Star Discoveries". The Journal of the American Association of Variable Star Observers. 36 (1): 90. arXiv:0801.3749. Bibcode:2008JAVSO..36...90M.
Lebouteiller, V.; Bernard-Salas, J.; Plucinsky, Brandl B.; et al. (2008). "Chemical composition and mixing in giant HII regions: NGC 3603, Doradus 30, and N66". The Astrophysical Journal. 680 (1): 398–419. arXiv:0710.4549. Bibcode:2008ApJ...680..398L. doi:10.1086/587503. S2CID16924851.
Tullmann, Ralph; Gaetz, Terrance J.; Plucinsky, Paul P.; et al. (2008). "The chandra ACIS survey of M33 (ChASeM33): investigating the hot ionized medium in NGC 604". The Astrophysical Journal. 685 (2): 919–932. arXiv:0806.1527. Bibcode:2008ApJ...685..919T. doi:10.1086/591019. S2CID1428019.
Lebouteiller, V.; Bernard-Salas, J.; Plucinsky, Brandl B.; et al. (2008). "Chemical composition and mixing in giant HII regions: NGC 3603, Doradus 30, and N66". The Astrophysical Journal. 680 (1): 398–419. arXiv:0710.4549. Bibcode:2008ApJ...680..398L. doi:10.1086/587503. S2CID16924851.