McCall, Marshall L. (May 1989). "H II regions, extinction, and IC 342 - A new view of the galactic neighborhood". The Astronomical Journal. 97: 1341. Bibcode:1989AJ.....97.1341M. doi:10.1086/115077.
McCall, Marshall L. (May 1989). "H II regions, extinction, and IC 342 - A new view of the galactic neighborhood". The Astronomical Journal. 97: 1341. Bibcode:1989AJ.....97.1341M. doi:10.1086/115077.