LBCS: The LOFAR Long-Baseline Calibrator Survey by Jackson, N, Tagore, A, Deller, A, Moldón, J, Varenius, E, Morabito, L, Wucknitz, O, Carozzi, T, Conway, J, Drabent, A, Kapinska, A, Orrù, E, Brentjens, M, Blaauw, R, Kuper, G, Sluman, J, Schaap, J, Vermaas, N, Iacobelli, M, Cerrigone, L, Shulevski, A, ter Veen, S, Fallows, R, Pizzo, R, Sipior, M, Anderson, J, Avruch, I, Bell, M, van Bemmel, I, Bentum, M, Best, P, Bonafede, A, Breitling, F, Broderick, J, Brouw, W, Brüggen, M, Ciardi, B, Corstanje, A, de Gasperin, F, de Geus, E, Eislöffel, J, Engels, D, Falcke, H, Garrett, M, Grießmeier, J, Gunst, A, Haarlem, v, Heald, G, Hoeft, M, Hörandel, J, Horneffer, A, Intema, H, Juette, E, Kuniyoshi, M, van Leeuwen, J, Loose, G, Maat, P, McFadden, R, McKay-Bukowski, D, McKean, J, Mulcahy, D, Munk, H, Pandey-Pommier, M, Polatidis, A, Reich, W, Röttgering, H, Rowlinson, A, Scaife, A, Schwarz, D, Steinmetz, M, Swinbank, J, Thoudam, S, Toribio, M, Vermeulen, R, Vocks, C, van Weeren, R, Wise, M, Yatawatta, S, Zarka, P