Supersymmetry Projection Rules on Exotic Branes
  We study the supersymmetry projection rules on exotic branes in type II string theories and M-theory. They justify the validity of the exotic duality between standard branes and exotic branes of codimension two. By virtue of the supersymmetry projection rules on various branes, we can consider a system that involves multiple non-parallel exotic branes in the nongeometric background. 
Tetsuji Kimura
hep-th