Chemical abundances of fast-rotating massive stars - II. Interpretation and comparison with evolutionary modelsConstantin Cazorla, Yaël Nazé, Thierry Morel, Cyril Georgy, Mélanie Godart and Norbert LangerA&A, 604 (2017) A123DOI: https://doi.org/10.1051/0004-6361/201730680