title: Structural isomers of C20 revisited: the cage and bowl are almost isoenergetic.
authors.affiliation: Organisch-Chemisches Institut, Universität Münster Corrensstrasse 40, 48149 Münster, Germany. grimmes@uni-muenster.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Grimme
authors.forename: Christian
authors.initials: C
authors.lastname: Mück-Lichtenfeld