The s process in AGB stars as constrained by a large sample of barium starsB. Cseh, M. Lugaro, V. D’Orazi, D. B. de Castro, C. B. Pereira, A. I. Karakas, L. Molnár, E. Plachy, R. Szabó, M. Pignatari and S. CristalloA&A, 620 (2018) A146DOI: https://doi.org/10.1051/0004-6361/201834079