The stellar metallicity gradients in galaxy discs in a cosmological scenario Patricia B. Tissera, Rubens E. G. Machado, Patricia Sanchez-Blazquez, Susana E. Pedrosa, Sebastián F. Sánchez, Owain Snaith and Jose Vilchez A&A, 592 (2016) A93 Published online: 04 August 2016 DOI: 10.1051/0004-6361/201628188