Chemical modeling of L183 (L134N): an estimate of the ortho/para H ratioL. Pagani, C. Vastel, E. Hugo, V. Kokoouline, C. H. Greene, A. Bacmann, E. Bayet, C. Ceccarelli, R. Peng and S. SchlemmerA&A, 494 2 (2009) 623-636DOI: https://doi.org/10.1051/0004-6361:200810587