Crowell, Jenna L.; Howell, Ellen S.; Magri, Christopher; Nolan, Michael C.; Fernández, Yanga R.; Richardson, James E.; Warner, Brian D.; Marshall, Sean E.; Springmann, Alessondra (July 2017). "Radar and Lightcurve Shape Model of Near-Earth Asteroid (1627) Ivar". Icarus. 291: 254–267. Bibcode:2017Icar..291..254C. doi:10.1016/j.icarus.2016.11.008. ISSN0019-1035.
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Skiff, Brian A.; Bowell, Edward; Koehn, Bruce W.; Sanborn, Jason J.; McLelland, Kyle P.; Warner, Brian D. (July 2012). "Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2008 May through 2008 December". Minor Planet Bulletin. 39 (3): 111. Bibcode:2012MPBu...39..111S. ISSN1052-8091.
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Crowell, Jenna L.; Howell, Ellen S.; Magri, Christopher; Nolan, Michael C.; Fernández, Yanga R.; Richardson, James E.; Warner, Brian D.; Marshall, Sean E.; Springmann, Alessondra (July 2017). "Radar and Lightcurve Shape Model of Near-Earth Asteroid (1627) Ivar". Icarus. 291: 254–267. Bibcode:2017Icar..291..254C. doi:10.1016/j.icarus.2016.11.008. ISSN0019-1035.
Skiff, Brian A.; Bowell, Edward; Koehn, Bruce W.; Sanborn, Jason J.; McLelland, Kyle P.; Warner, Brian D. (July 2012). "Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) – 2008 May through 2008 December". The Minor Planet Bulletin. 39 (3): 111–130. Bibcode:2012MPBu...39..111S. ISSN1052-8091.
Hahn, G.; Magnusson, P.; Harris, A. W.; Young, J. W.; Belkora, L. A.; Fico, N. J.; et al. (April 1989). "Physical studies of Apollo-Amor asteroids – UBVRI photometry of 1036 Ganymed and 1627 Ivar". Icarus. 78 (2): 363–381. Bibcode:1989Icar...78..363H. doi:10.1016/0019-1035(89)90184-X. ISSN0019-1035.
Lupishko, D. F.; Velichko, F. P.; Shevchenko, V. G. (October 1986). "The asteroid 1627 Ivar – UBV photometry, period, and sense of rotation". Kinematika I Fizika Nebesnykh Tel. 2: 39–43. Bibcode:1986KFNT....2...39L. ISSN0233-7665.
Skiff, Brian A.; Bowell, Edward; Koehn, Bruce W.; Sanborn, Jason J.; McLelland, Kyle P.; Warner, Brian D. (July 2012). "Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2008 May through 2008 December". Minor Planet Bulletin. 39 (3): 111. Bibcode:2012MPBu...39..111S. ISSN1052-8091.
Ostro, S. J.; Campbell, D. B.; Chandler, J. F.; Shapiro, I. I.; Hine, A. A.; Velez, R.; et al. (October 1991). "Asteroid radar astrometry". Astronomical Journal. 102: 1490–1502.ResearchsupportedbyNASA. Bibcode:1991AJ....102.1490O. doi:10.1086/115975. ISSN0004-6256.