Reply to "Comment on 'Fano resonance for Anderson Impurity Systems' "
  In a recent Comment, Kolf et al. (cond-mat/0503669) state that our analysis of the Fano resonance for Anderson impurity systems [Luo et al., Phys. Rev. Lett 92, 256602 (2004)] is incorrect. Here we want to point out that their comments are not based on firm physical results and their criticisms are unjustified and invalid. 
H. G. Luo, T. Xiang, X. Q. Wang, Z. B. Su, and L. Yu