| article html file updated | 6 February 2020 05:30 CET | Update | https://www.mdpi.com/2071-1050/5/11/4870 |
| article html file updated | 20 September 2019 03:05 CEST | Update | - |
| article html file updated | 7 May 2019 22:14 CEST | Update | - |
| article html file updated | 21 March 2019 07:31 CET | Update | - |
| article html file updated | 19 August 2015 09:25 CEST | Original file | - |
| article pdf uploaded. | 13 November 2013 16:51 CET | Updated version of record | https://www.mdpi.com/2071-1050/5/11/4870/pdf |
| article pdf uploaded. | 12 November 2013 13:41 CET | Version of Record | https://www.mdpi.com/2071-1050/5/11/4870/pdf-vor |
