The RGB tip of galactic globular clusters and the revision of the axion-electron coupling boundO. Straniero, C. Pallanca, E. Dalessandro, I. Domínguez, F. R. Ferraro, M. Giannotti, A. Mirizzi and L. PiersantiA&A, 644 (2020) A166DOI: https://doi.org/10.1051/0004-6361/202038775
