VizieR online Data Catalogue associated with article published in journal Astronomical Journal (AAS) with title 'The arizona radio observatory CO mapping survey of galactic molecular clouds. I. The W51 region in CO and ^13^CO J = 2-1 emission.' (bibcode: 2010ApJS..191..232B)
Bieging, J. H. (Creator), Peters, W. L. (Creator), Kang, M. (Creator) (2011). CO survey of W51 molecular cloud. Centre de Donnees Strasbourg (CDS). 10.26093/cds/vizier.21910232