The Infrared Einstein Ring in the Gravitational Lens MG J1131+0456 and the Death of the Dusty Lens Hypothesis Newer:Hubble Space Telescope Observations of 10 Two-image Gravitational LensesOlder:Rapid Polarization Variability in the BL Lacertae Object S5 0716+714 PostedJanuary 21, 2000 AuthorScienceSites Categories2000 Tagsgravitational lensing