| article html file updated | 7 February 2020 18:52 CET | Update | https://www.mdpi.com/1996-1944/9/12/971 |
| article html file updated | 22 September 2019 08:02 CEST | Update | - |
| article html file updated | 4 May 2019 20:48 CEST | Update | - |
| article html file updated | 28 December 2016 10:34 CET | Update | - |
| article html file updated | 28 December 2016 07:57 CET | Update | - |
| article html file updated | 27 December 2016 10:50 CET | Update | - |
| article html file updated | 30 November 2016 13:26 CET | Original file | - |
| article xml uploaded. | 30 November 2016 13:24 CET | Update | https://www.mdpi.com/1996-1944/9/12/971/xml |
| article xml uploaded. | 30 November 2016 13:24 CET | Original file | - |
| article pdf uploaded. | 30 November 2016 13:24 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/971/pdf |
