| article html file updated | 8 February 2020 19:14 CET | Update | https://www.mdpi.com/2414-4088/1/4/26 |
| article html file updated | 2 May 2019 19:30 CEST | Update | - |
| article html file updated | 23 October 2017 15:41 CEST | Original file | - |
| article xml uploaded. | 23 October 2017 15:40 CEST | Original file | https://www.mdpi.com/2414-4088/1/4/26/xml |
| article pdf uploaded. | 23 October 2017 15:40 CEST | Version of Record | https://www.mdpi.com/2414-4088/1/4/26/pdf |
