Chemistry of C3 and carbon chain molecules in DR21(OH) B. Mookerjea, G. E. Hassel, M. Gerin, T. Giesen, J. Stutzki, E. Herbst, J. H. Black, P. F. Goldsmith, K. M. Menten, J. Krełowski et al. (7 more) A&A, 546 (2012) A75 Published online: 08 October 2012 DOI: 10.1051/0004-6361/201219287