Water deuterium fractionation in the low-mass protostar NGC1333-IRAS2A F.-C. Liu, B. Parise, L. Kristensen, R. Visser, E. F. van Dishoeck and R. Güsten A&A, 527 (2011) A19 Published online: 20 January 2011 DOI: 10.1051/0004-6361/201015519