Axial symmetries in lattice QCD with Kaplan fermions
  This paper develops in detail a lattice definition of QCD based on the chiral defect fermions recently introduced by Kaplan. The revised version provides missing technical details in the proof that non-singlet axial symmetries become exact in the limit of an infinite fifth dimension. Also several minor errors are corrected. 
Vadim Furman and Yigal Shamir