| article html file updated | 17 June 2015 09:43 CEST | Update | https://www.mdpi.com/1424-8220/13/6/6981 |
| article html file updated | 31 July 2013 16:14 CEST | Update | - |
| article xml file uploaded | 31 July 2013 16:14 CEST | Update | https://www.mdpi.com/1424-8220/13/6/6981/xml |
| article html file updated | 19 July 2013 09:51 CEST | Original file | - |
| article xml file uploaded | 19 July 2013 09:51 CEST | Original file | - |
| article pdf uploaded. | 27 May 2013 11:33 CEST | Version of Record | https://www.mdpi.com/1424-8220/13/6/6981/pdf |
