Two-particle Wigner functions in a one-dimensional Calogero-Sutherland potential A. Teğmen, T. Altanhan and B. S. Kandemir Eur. Phys. J. D, 41 2 (2007) 397-402 Published online: 29 September 2006 DOI: 10.1140/epjd/e2006-00221-1