F. Stevens, H. Vrielinck, F. Callens, E. Pauwels, V. Van Speybroeck, M. Waroquier PosterConference / event / venue DFT2003 conference: "The applications of Density Functional Theory in Chemistry and PhysicsBrussels, BelgiumSunday, 7 September, 2003 to Friday, 12 September, 2003