This journal moved to a new homepage:

In October 2008 MDPI launched a new publication platform at the papers published in MDPI journals are available at However, papers published up to end of September 2008 also have a copy at

The last version of this homepage at prepared in October 2008 is available: Link.

Last change: 22 March 2009, by Mr. Dietrich Rordorf, E-mail: