Martinus Justinus Godefriedus "Tini" Veltman was a Dutch theoretical physicist. He shared the 1999 Nobel Prize in physics with his former PhD student Gerardus 't Hooft for their work on particle theory.
Veltman in 2005
Gerardus (Gerard) ’t Hooft is a Dutch theoretical physicist and professor at Utrecht University, the Netherlands. He shared the 1999 Nobel Prize in Physics with his thesis advisor Martinus J. G. Veltman "for elucidating the quantum structure of electroweak interactions".
’t Hooft in November 2008
Gerard ’t Hooft at Harvard