An in-depth spectroscopic examination of molecular bands from 3D hydrodynamical model atmospheres - I. Formation of the G-band in metal-poor dwarf starsA. J. Gallagher, E. Caffau, P. Bonifacio, H.-G. Ludwig, M. Steffen and M. SpiteA&A, 593 (2016) A48DOI: https://doi.org/10.1051/0004-6361/201628602