| article html file updated | 7 February 2020 20:11 CET | Update | https://www.mdpi.com/1996-1073/10/1/9 |
| article html file updated | 22 September 2019 14:30 CEST | Update | - |
| article html file updated | 4 May 2019 18:04 CEST | Update | - |
| article html file updated | 7 February 2017 09:24 CET | Update | - |
| article html file updated | 23 December 2016 12:31 CET | Original file | - |
| article xml uploaded. | 23 December 2016 12:30 CET | Update | https://www.mdpi.com/1996-1073/10/1/9/xml |
| article xml uploaded. | 23 December 2016 12:30 CET | Original file | - |
| article pdf uploaded. | 23 December 2016 12:30 CET | Version of Record | https://www.mdpi.com/1996-1073/10/1/9/pdf |
