Evolutionary status of dense cores in the NGC 1333 IRAS 4 star-forming region E. Koumpia, F. F. S. van der Tak, W. Kwon, J. J. Tobin, G. A. Fuller and R. Plume A&A, 595 (2016) A51 Published online: 28 October 2016 DOI: 10.1051/0004-6361/201528042