 Dimitri Nanopoulos and John Iliopoulos (2007 Dirac Prize for his contributions on the physics of the charm quark,
<meaning-changed>  Dimitri Nanopoulos and John Iliopoulos (2007 Dirac Prize for his contributions on the physics of the charm quark,
 Dimitri Nanopoulos (extensive work on particle physics and cosmology), and John Iliopoulos (2007 Dirac Prize for his contributions on the physics of the charm quark,