| article html file updated | 7 February 2020 18:59 CET | Update | https://www.mdpi.com/2079-4991/6/12/234 |
| article html file updated | 22 September 2019 08:25 CEST | Update | - |
| article html file updated | 4 May 2019 20:32 CEST | Update | - |
| article html file updated | 30 December 2016 02:01 CET | Update | - |
| article html file updated | 2 December 2016 11:38 CET | Original file | - |
| article xml uploaded. | 2 December 2016 11:37 CET | Update | https://www.mdpi.com/2079-4991/6/12/234/xml |
| article xml uploaded. | 2 December 2016 11:37 CET | Original file | - |
| article pdf uploaded. | 2 December 2016 11:37 CET | Version of Record | https://www.mdpi.com/2079-4991/6/12/234/pdf |
