| article html file updated | 8 February 2020 22:45 CET | Update | https://www.mdpi.com/2411-5126/1/1/6 |
| article html file updated | 28 September 2019 21:25 CEST | Update | N/A |
| article html file updated | 2 May 2019 11:30 CEST | Update | N/A |
| article html file updated | 18 April 2019 09:07 CEST | Update | N/A |
| article html file updated | 1 December 2017 11:31 CET | Original file | N/A |
| article xml uploaded. | 1 December 2017 11:30 CET | Original file | https://www.mdpi.com/2411-5126/1/1/6/xml |
| article pdf uploaded. | 1 December 2017 11:30 CET | Version of Record | https://www.mdpi.com/2411-5126/1/1/6/pdf |
