title: A conundrum for density functional theory.
authors.affiliation: Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. shs3@illinois.edu.
authors.forename: Sharon
authors.initials: S
authors.lastname: Hammes-Schiffer
mesh_terms: D006801:Humans; D011789:Quantum Theory; D013816:Thermodynamics