UdeM Preprint ID: UdeM-GPP-TH-08-168 arXiv: http://xxx.lanl.gov/abs/0806.4692 Authors: Avinash Khare , M. B. Paranjape Journal Reference: Phys.Rev. B83 (2011) 172401 Comments: DOI: 10.1103/PhysRevB.83.172401