| article html file updated | 6 February 2020 09:07 CET | Update | https://www.mdpi.com/2071-1050/6/5/2685 |
| article html file updated | 20 September 2019 08:08 CEST | Update | - |
| article html file updated | 7 May 2019 14:50 CEST | Update | - |
| article html file updated | 21 March 2019 16:44 CET | Update | - |
| article html file updated | 20 August 2015 06:09 CEST | Original file | - |
| article pdf uploaded. | 9 May 2014 14:21 CEST | Updated version of record | https://www.mdpi.com/2071-1050/6/5/2685/pdf |
| article pdf uploaded. | 8 May 2014 10:58 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/5/2685/pdf-vor |
