| article html file updated | 7 February 2020 19:38 CET | Update | https://www.mdpi.com/1996-1073/9/12/1051 |
| article html file updated | 22 September 2019 11:39 CEST | Update | - |
| article html file updated | 4 May 2019 19:09 CEST | Update | - |
| article html file updated | 28 December 2016 09:04 CET | Update | - |
| article html file updated | 14 December 2016 13:10 CET | Original file | - |
| article xml uploaded. | 14 December 2016 13:09 CET | Update | https://www.mdpi.com/1996-1073/9/12/1051/xml |
| article xml uploaded. | 14 December 2016 13:09 CET | Original file | - |
| article pdf uploaded. | 14 December 2016 13:09 CET | Version of Record | https://www.mdpi.com/1996-1073/9/12/1051/pdf |
