Direct detection of a magnetic field at the surface of V390 Aurigae – an effectively single active giantR. Konstantinova-Antova, M. Aurière, I. Kh. Iliev, R. Cabanac, J.-F. Donati, D. Mouillet and P. PetitA&A, 480 2 (2008) 475-479DOI: https://doi.org/10.1051/0004-6361:20078315