| article html file updated | 17 June 2015 08:08 CEST | Update | https://www.mdpi.com/1424-8220/13/4/4468 |
| article html file updated | 5 June 2013 11:41 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 11:40 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/4468/xml |
| article pdf uploaded. | 2 April 2013 11:51 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/4/4468/pdf |
