| article html file updated | 8 February 2020 20:18 CET | Update | https://www.mdpi.com/2412-3811/2/4/19 |
| article html file updated | 28 September 2019 05:30 CEST | Update | - |
| article html file updated | 2 May 2019 17:03 CEST | Update | - |
| article html file updated | 3 November 2017 16:35 CET | Original file | - |
| article xml uploaded. | 3 November 2017 16:33 CET | Original file | https://www.mdpi.com/2412-3811/2/4/19/xml |
| article pdf uploaded. | 3 November 2017 16:33 CET | Version of Record | https://www.mdpi.com/2412-3811/2/4/19/pdf |
