T. A. van Kempen, E. F. van Dishoeck, R. Güsten, L. E. Kristensen, P. Schilke, M. R. Hogerheijde, W. Boland, K. M. Menten and F. Wyrowski
A&A, 507 3 (2009) 1425-1442
Published online: 27 August 2009
DOI: 10.1051/0004-6361/200912507
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