VLBI imaging of the gravitational lenses B1422+231 and MGJ0414+0534
  We present wide-field images of the quadruple gravitational lenses B1422+231 and MGJ0414+0534 obtained from global Very Long Baseline Interferometry (VLBI) observations at 8.4 GHz on 23 November 1997. We present also a lens model for MGJ0414+0534, which reproduces the core positions and flux densities of the VLBI images, combining a singular isothermal ellipsoid with external shear, and a singular isothermal sphere to represent, respectively, the main lens galaxy and its neighbor, a faint galaxy near one of the images. 
E. Ros (1), J.C. Guirado (2), J.M. Marcaide (2), M.A. Perez-Torres   (3), E.E. Falco (4), J.A. Munoz (5), A. Alberdi (6), L....