I'm doing an undergraduate research project this term on some modified theories of gravity, and I need some mass/density profiles. Does anyone know any papers that give mass profiles of galaxy clusters determined predominantly through gravitational lensing measurements? The model I'm working with does not change propagation of light (from that predicted by GR) but it does affect motion of massive objects (by changing the effective potential they see), so to test it self-consistently, I need data that was not determined via Newtonian dynamics (e.g. galaxy rotation curve data isn't very useful). Thanks!