Mai Salah Helmy

The role of convexity in perception of symmetry and in visual short-term memory

Marco Bertamini, Johan Hulleman, Mai Salah Helmy, 2013, Quarterly journal of experimental psychology.

The shape of a hole and that of the surface-with-hole cannot be analyzed separately

Marco Bertamini, Mai Salah Helmy, Marco Bertamini, 2012, Psychonomic bulletin & review.