| article html file updated | 8 February 2020 18:37 CET | Update | https://www.mdpi.com/2410-3888/2/4/17 |
| article html file updated | 2 May 2019 20:55 CEST | Update | - |
| article html file updated | 16 October 2017 15:25 CEST | Original file | - |
| article xml uploaded. | 16 October 2017 15:24 CEST | Original file | https://www.mdpi.com/2410-3888/2/4/17/xml |
| article pdf uploaded. | 16 October 2017 15:24 CEST | Version of Record | https://www.mdpi.com/2410-3888/2/4/17/pdf |
