Erratum to A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry : Arellano Ferro, A Bramich, D. M Figuera Jaimes, R Giridhar, S Kains, N Kuppuswamy, K Jørgensen, U. G Alsubai, K. A Andersen, J. M Bozza, V Browne, P Calchi Novati, S Damerdji, Y Diehl, C Dominik, M Dreizler, S Elyiv, A Giannini, E Harpsøe, K Hessman, F. V Hinse, T. C Hundertmark, M Juncher, D Kerins, E Korhonen, H Liebig, C Mancini, L Mathiasen, M Penny, M. T Rabus, M Rahvar, S Ricci, D Scarpetta, G Skottfelt, J Snodgrass, C Southworth, J Surdej, J Tregloan-Reed, J Vilela, C Wertz, O Sharif University of Technology Oxford University Press