EK Draconis - Magnetic activity in the photosphere and chromosphere S. P. Järvinen, S. V. Berdyugina, H. Korhonen, I. Ilyin and I. Tuominen A&A, 472 3 (2007) 887-895 Published online: 17 July 2007 DOI: 10.1051/0004-6361:20077551