| article html file updated | 8 February 2020 08:45 CET | Update | https://www.mdpi.com/2410-3896/2/2/22 |
| article html file updated | 3 May 2019 16:33 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:01 CEST | Update | N/A |
| article html file updated | 20 June 2017 13:05 CEST | Original file | N/A |
| article xml uploaded. | 20 June 2017 13:04 CEST | Original file | https://www.mdpi.com/2410-3896/2/2/22/xml |
| article pdf uploaded. | 20 June 2017 13:04 CEST | Version of Record | https://www.mdpi.com/2410-3896/2/2/22/pdf |
