| article html file updated | 16 June 2015 04:08 CEST | Update | https://www.mdpi.com/1424-8220/8/3/2006 |
| article html file updated | 10 June 2013 07:37 CEST | Update | - |
| article xml file uploaded | 10 June 2013 07:37 CEST | Update | https://www.mdpi.com/1424-8220/8/3/2006/xml |
| article html file updated | 23 May 2013 15:23 CEST | Original file | - |
| article xml file uploaded | 23 May 2013 15:22 CEST | Original file | - |
