| article html file updated | 7 February 2020 17:23 CET | Update | https://www.mdpi.com/2411-5134/1/4/22 |
| article html file updated | 4 May 2019 23:44 CEST | Update | - |
| article html file updated | 2 November 2016 12:45 CET | Original file | - |
| article xml uploaded. | 2 November 2016 12:44 CET | Update | https://www.mdpi.com/2411-5134/1/4/22/xml |
| article xml uploaded. | 2 November 2016 12:44 CET | Original file | - |
| article pdf uploaded. | 2 November 2016 12:44 CET | Version of Record | https://www.mdpi.com/2411-5134/1/4/22/pdf |
