Sodium abundances of AGB and RGB stars in Galactic globular clusters - II. Analysis and results of NGC 104, NGC 6121, and NGC 6809Y. Wang, F. Primas, C. Charbonnel, M. Van der Swaelmen, G. Bono, W. Chantereau and G. ZhaoA&A, 607 (2017) A135DOI: https://doi.org/10.1051/0004-6361/201730976
