| article html file updated | 6 February 2020 13:23 CET | Update | https://www.mdpi.com/2071-1050/6/11/7725 |
| article html file updated | 7 May 2019 06:02 CEST | Update | - |
| article html file updated | 25 March 2019 17:05 CET | Update | - |
| article html file updated | 21 August 2015 01:11 CEST | Update | - |
| article html file updated | 24 November 2014 08:51 CET | Original file | - |
| article xml file uploaded | 24 November 2014 08:51 CET | Original file | https://www.mdpi.com/2071-1050/6/11/7725/xml |
| article pdf uploaded. | 10 November 2014 08:41 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/11/7725/pdf |
| article pdf uploaded. | 10 November 2014 08:18 CET | Updated version of record | https://www.mdpi.com/2071-1050/6/11/7725/pdf-vor |
| article pdf uploaded. | 5 November 2014 09:03 CET | Version of Record | https://www.mdpi.com/2071-1050/6/11/7725/pdf-vor |