Herschel-HIFI observations of H2O, NH3, and N2H+ toward high-mass starless and protostellar clumps identified by the Hi-GAL surveyL. Olmi, C. M. Persson and C. CodellaA&A, 583 (2015) A125DOI: https://doi.org/10.1051/0004-6361/201526901
