Savier et al., A molecular mechanism for the topographic alignment of convergent neural maps.
    Elife 6.  doi: 10.7554/eLife.20470. (2017)

   Bevins et al., Genetic dissection of EphA receptor signaling dynamics during
   retinotopic mapping.
   Journal of Neuroscience 3, 10302–10310 (2011).

   Triplett et al., Retinal Input Instructs Alignment of Visual Topographic Maps.
   Cell 139, 175–185 (2009).

     Lemke and Reber, Retinotectal Mapping: New Insights from Molecular Genetics.
     Annual Review of Cell and Developmental Biology 21, 551–580 (2005).

    Reber et al., A relative signalling model for the formation of a topographic neural map.
    Nature 431, 847-853 (2004).

    Brown et al., Topographic mapping from the retina to the midbrain is controlled
    by relative but not absolute levels of EphA receptor signaling.
    Cell 102, 77-88 (2000).