VizieR online Data Catalogue associated with article published in journal Astronomical Journal (AAS) with title 'Circumstellar ^12^c/^13^c isotope ratios from millimeter observations of CN and CO: mixing in carbon- and oxygen-rich stars.' (bibcode: 2009ApJ...690..837M)
Milam, S. N. (Creator), Woolf, N. J. (Creator), Ziurys, L. M. (Creator) (2011). CN and CO observations toward AGB stars. Centre de Donnees Strasbourg (CDS). 10.26093/cds/vizier.16900837