Mapping EK Draconis with PEPSI - Possible evidence for starspot penumbrae S. P. Järvinen, K. G. Strassmeier, T. A. Carroll, I. Ilyin and M. Weber A&A, 620 (2018) A162 Published online: 12 December 2018 DOI: 10.1051/0004-6361/201833496