| article html file updated | 17 June 2015 05:55 CEST | Update | https://www.mdpi.com/1424-8220/13/2/1664 |
| article html file updated | 30 October 2013 09:39 CET | Update | - |
| article xml file uploaded | 30 October 2013 09:39 CET | Update | https://www.mdpi.com/1424-8220/13/2/1664/xml |
| article html file updated | 23 April 2013 15:12 CEST | Update | - |
| article xml file uploaded | 23 April 2013 15:12 CEST | Update | - |
| article html file updated | 25 March 2013 12:07 CET | Original file | - |
| article xml file uploaded | 25 March 2013 12:06 CET | Original file | - |
| article pdf uploaded. | 29 January 2013 14:02 CET | Updated version of record | https://www.mdpi.com/1424-8220/13/2/1664/pdf |
| article pdf uploaded. | 28 January 2013 15:05 CET | Version of Record | https://www.mdpi.com/1424-8220/13/2/1664/pdf-vor |
