Combes, F.; et al. (April 1980). "Neutral hydrogen observations and computer modelling of the interacting galaxies NGC 672-IC 1727". Astronomy and Astrophysics. 84: 85–92. Bibcode:1980A&A....84...85C.
Stanchfield, Sara; et al. (May 2012). An HI and Optical Study of Interacting Galaxies NGC 672 and IC 1727. American Astronomical Society, AAS Meeting #220. Bibcode:2012AAS...22052419S. 524.19.