A minor merger origin for stellar inner discs and rings in spiral galaxiesM. C. Eliche-Moral, A. C. González-García, M. Balcells, J. A. L. Aguerri, J. Gallego, J. Zamorano and M. PrietoA&A, 533 (2011) A104DOI: https://doi.org/10.1051/0004-6361/201116509