title: WITHDRAWN: Manfred Zimmermann reaches 75.
abstract: This article has been withdrawn consistent with Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). The Publisher apologizes for any inconvenience this may cause.
authors.affiliation: University of Kiel, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Herdegen