A HIFI view on circumstellar H2O in M-type AGB stars: radiative transfer, velocity profiles, and H2O line coolingM. Maercker, T. Danilovich, H. Olofsson, E. De Beck, K. Justtanont, R. Lombaert and P. RoyerA&A, 591 (2016) A44DOI: https://doi.org/10.1051/0004-6361/201628310