UdeM Preprint ID: UdeM-GPP-TH-96-39a arXiv: http://xxx.lanl.gov/abs/quant-ph/9708049 Authors: S. Chaturvedi , R. MacKenzie , P.K. Panigrahi , V. Srinivasan Journal Reference: Mod. Phys. Lett. A12 (1997) 1095-1099
