title: A simple approach to nonspherical electron densities by using invarioms.
authors.affiliation: Institut für Chemie/Kristallographie, Freie Universität Berlin, Berlin, Germany. birger@chemie.fu-berlin.de
authors.forename: Birger
authors.initials: B
authors.lastname: Dittrich
authors.forename: Tibor
authors.initials: T
authors.lastname: Koritsánszky
authors.forename: Peter
authors.initials: P
authors.lastname: Luger