SARCS strong-lensing galaxy groups - I. Optical, weak lensing, and scaling lawsG. Foëx, V. Motta, M. Limousin, T. Verdugo, A. More, R. Cabanac, R. Gavazzi and R. P. MuñozA&A, 559 (2013) A105DOI: https://doi.org/10.1051/0004-6361/201321112