PEPSI deep spectra - III. Chemical analysis of the ancient planet-host star Kepler−444C. E. Mack, K. G. Strassmeier, I. Ilyin, S. C. Schuler, F. Spada and S. A. BarnesA&A, 612 (2018) A46DOI: https://doi.org/10.1051/0004-6361/201731634
