Water in low-mass star-forming regions with Herschel - The link between water gas and ice in protostellar envelopesM. Schmalzl, R. Visser, C. Walsh, T. Albertsson, E. F. van Dishoeck, L. E. Kristensen and J. C. MottramA&A, 572 (2014) A81DOI: https://doi.org/10.1051/0004-6361/201424236