HIFI observations of warm gas in DR21: Shock versus radiative heating V. Ossenkopf, M. Röllig, R. Simon, N. Schneider, Y. Okada, J. Stutzki, M. Gerin, M. Akyilmaz, D. Beintema, A. O. Benz et al. (28 more) A&A, 518 (2010) L79 Published online: 16 July 2010 DOI: 10.1051/0004-6361/201014579