Amplitudes of solar-like oscillations in red giant stars - Evidence for non-adiabatic effects using CoRoT observationsR. Samadi, K. Belkacem, M.-A. Dupret, H.-G. Ludwig, F. Baudin, E. Caffau, M.-J. Goupil and C. BarbanA&A, 543 (2012) A120DOI: https://doi.org/10.1051/0004-6361/201219253