I Yang, W Kang, L. N Pfeiffer, K. W Baldwin, K. W West, Eun-Ah Kim, Eduardo FradkinPhys. Rev. B 71, 113312. DOI: http://dx.doi.org/10.1103/PhysRevB.71.113312. arXiv:cond-mat/0407641 Tuesday, March 29, 2005 PhysRevB2005Yang-1.pdf