Breaks in surface brightness profiles and radial abundance gradients in the discs of spiral galaxiesL. S. Pilyugin, E. K. Grebel, I. A. Zinchenko, Y. A. Nefedyev and J. M. VílchezA&A, 608 (2017) A127DOI: https://doi.org/10.1051/0004-6361/201731256