| article html file updated | 7 February 2020 19:49 CET | Update | https://www.mdpi.com/1996-1073/9/12/1077 |
| article html file updated | 22 September 2019 12:33 CEST | Update | - |
| article html file updated | 4 May 2019 18:48 CEST | Update | - |
| article html file updated | 28 December 2016 09:08 CET | Update | - |
| article html file updated | 16 December 2016 12:19 CET | Original file | - |
| article xml uploaded. | 16 December 2016 12:18 CET | Update | https://www.mdpi.com/1996-1073/9/12/1077/xml |
| article xml uploaded. | 16 December 2016 12:18 CET | Original file | - |
| article pdf uploaded. | 16 December 2016 12:18 CET | Version of Record | https://www.mdpi.com/1996-1073/9/12/1077/pdf |
