Michel, Gero W.
Becker, Matthias
Angermann, Detlef
Reigber, Christoph
Reinhart, Ewald
Article History
Received: 31 January 2000
Revised: 1 June 2000
Accepted: 2 June 2000
First Online: 24 June 2014
Free to read: This content has been made available to all.