Heavy water stratification in a low-mass protostarA. Coutens, C. Vastel, S. Cazaux, S. Bottinelli, E. Caux, C. Ceccarelli, K. Demyk, V. Taquet and V. WakelamA&A, 553 (2013) A75DOI: https://doi.org/10.1051/0004-6361/201220967