Deuteration of ammonia in the starless core Ophiuchus/H-MM1 J. Harju, F. Daniel, O. Sipilä, P. Caselli, J. E. Pineda, R. K. Friesen, A. Punanova, R. Güsten, L. Wiesenfeld, P. C. Myers et al. (6 more) A&A, 600 (2017) A61 Published online: 30 March 2017 DOI: 10.1051/0004-6361/201628463