| article html file updated | 7 February 2020 22:37 CET | Update | https://www.mdpi.com/2410-3896/2/1/8 |
| article html file updated | 23 September 2019 03:38 CEST | Update | N/A |
| article html file updated | 4 May 2019 12:48 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:00 CEST | Update | N/A |
| article html file updated | 4 February 2017 05:45 CET | Original file | N/A |
| article xml uploaded. | 4 February 2017 05:33 CET | Original file | https://www.mdpi.com/2410-3896/2/1/8/xml |
| article pdf uploaded. | 4 February 2017 05:33 CET | Version of Record | https://www.mdpi.com/2410-3896/2/1/8/pdf |
