| article html file updated | 17 June 2015 06:19 CEST | Update | https://www.mdpi.com/1424-8220/13/2/2117 |
| article html file updated | 30 October 2013 09:49 CET | Update | - |
| article xml file uploaded | 30 October 2013 09:49 CET | Update | https://www.mdpi.com/1424-8220/13/2/2117/xml |
| article html file updated | 23 April 2013 15:19 CEST | Update | - |
| article xml file uploaded | 23 April 2013 15:18 CEST | Update | - |
| article html file updated | 25 March 2013 12:22 CET | Original file | - |
| article xml file uploaded | 25 March 2013 12:21 CET | Original file | - |
| article pdf uploaded. | 6 February 2013 14:12 CET | Version of Record | https://www.mdpi.com/1424-8220/13/2/2117/pdf |
