| article html file updated | 7 February 2020 19:35 CET | Update | https://www.mdpi.com/2410-3896/1/1/9 |
| article html file updated | 4 May 2019 19:18 CEST | Update | - |
| article html file updated | 27 October 2017 08:53 CEST | Update | - |
| article html file updated | 14 December 2016 09:53 CET | Original file | - |
| article xml uploaded. | 14 December 2016 09:52 CET | Original file | https://www.mdpi.com/2410-3896/1/1/9/xml |
| article pdf uploaded. | 14 December 2016 09:52 CET | Version of Record | https://www.mdpi.com/2410-3896/1/1/9/pdf |
