Polarized point sources in the LOFAR Two-meter Sky Survey: A preliminary catalog C. L. Van Eck, M. Haverkorn, M. I. R. Alves, R. Beck, P. Best, E. Carretti, K. T. Chyży, J. S. Farnes, K. Ferrière, M. J. Hardcastle et al. (15 more) A&A, 613 (2018) A58 Published online: 01 June 2018 DOI: 10.1051/0004-6361/201732228