Rotational structure and outflow in the infrared dark cloud 18223-3 C. Fallscheer, H. Beuther, Q. Zhang, E. Keto and T. K. Sridharan A&A, 504 1 (2009) 127-137 Published online: 09 July 2009 DOI: 10.1051/0004-6361/200912307