The APEX-CHAMP+ view of the Orion Molecular Cloud 1 core - Constraining the excitation with submillimeter CO multi-line observationsT.-C. Peng, F. Wyrowski, L. A. Zapata, R. Güsten and K. M. MentenA&A, 538 (2012) A12DOI: https://doi.org/10.1051/0004-6361/201117608
