H I line observations of 151 evolved stars made with the Nançay Radio Telescope - II. Analysis of the H I and H2 content of AGB star circumstellar envelopesE. Gérard, W. van Driel, L. D. Matthews, T. Le Bertre, J.-M. Martin and N. Q. RiêuA&A, 704 (2025) A186DOI: https://doi.org/10.1051/0004-6361/202556118