First NH3 detection of the Orion Bar B. Larsson, R. Liseau, P. Bergman, P. Bernath, J. H. Black, R. S. Booth, V. Buat, C. L. Curry, P. Encrenaz, E. Falgarone et al. (25 more) A&A, 402 3 (2003) L69-L72 Published online: 23 April 2003 DOI: 10.1051/0004-6361:20030342