Equivalence of Geometric Engineering and Hanany-Witten via Fractional   Branes
  We present an explicit relation between the Hanany-Witten and Geometric Engineering approaches of realising gauge theories in string theory. The last piece in the puzzle is a T-duality relating arbitrary Hanany-Witten setups and fractional branes. 
Andreas Karch, Dieter Lust, Douglas J. Smith