Adjoint ideals and Gorenstein blowups in two-dimensional regular local   rings
  In this article we investigate when a complete ideal in a two-dimensional regular local ring is a multiplier ideal of some ideal with an integral multiplying parameter. In particular, we show that this question is closely connected to the Gorenstein property of the blowup along the ideal. 
Eero Hyry, Yukio Nakamura, Lauri Ojala