| article html file updated | 7 February 2020 21:00 CET | Update | https://www.mdpi.com/1996-1073/10/1/67 |
| article html file updated | 22 September 2019 19:07 CEST | Update | - |
| article html file updated | 4 May 2019 16:20 CEST | Update | - |
| article html file updated | 7 February 2017 09:50 CET | Update | - |
| article html file updated | 7 January 2017 11:13 CET | Original file | - |
| article xml uploaded. | 7 January 2017 11:12 CET | Original file | https://www.mdpi.com/1996-1073/10/1/67/xml |
| article pdf uploaded. | 7 January 2017 11:12 CET | Version of Record | https://www.mdpi.com/1996-1073/10/1/67/pdf |
