xCOLD GASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequenceK. A. Lutz, A. Saintonge, B. Catinella, L. Cortese, F. Eisenhauer, C. Kramer, S. M. Moran, L. J. Tacconi, B. Vollmer and J. WangA&A, 649 (2021) A39DOI: https://doi.org/10.1051/0004-6361/202038961
