LoCuSS: First results from strong-lensing analysis of 20 massive galaxy clusters at z = 0.2

Johan Richard, Graham P. Smith, Jean Paul Kneib, Richard S. Ellis, A. J.R. Sanderson, L. Pei, T. A. Targett, D. J. Sand, A. M. Swinbank, H. Dannerbauer, P. Mazzotta, M. Limousin, E. Egami, E. Jullo, V. Hamilton-Morris, S. M. Moran