Montes Gutiérrez, David and Tabernero, H. and Koposov, S. and Hourihane, A. and Jofré, P. and Masseron, T. (2014) The Gaia-ESO Survey: The first abundance determination of the pre-main-sequence cluster gamma velorum. Astronomy and astrophysics, 567 (A55). ISSN 0004-6361