Direct evidence of multiple reservoirs of volatile nitrogen in a protosolar nebula analogue P. Hily-Blant, V. Magalhaes, J. Kastner, A. Faure, T. Forveille and C. Qi A&A, 603 (2017) L6 Published online: 19 July 2017 DOI: 10.1051/0004-6361/201730524