Detection of ultra-weak magnetic fields in Am stars: β Ursae Majoris and θ LeonisA. Blazère, P. Petit, F. Lignières, M. Aurière, J. Ballot, T. Böhm, C. P. Folsom, M. Gaurat, L. Jouve, A. Lopez Ariste, C. Neiner and G. A. WadeA&A, 586 (2016) A97DOI: https://doi.org/10.1051/0004-6361/201527556
