LBCS: The LOFAR Long-Baseline Calibrator Survey N. Jackson, A. Tagore, A. Deller, J. Moldón, E. Varenius, L. Morabito, O. Wucknitz, T. Carozzi, J. Conway, A. Drabent et al. (69 more) A&A, 595 (2016) A86 Published online: 03 November 2016 DOI: 10.1051/0004-6361/201629016