| article html file updated | 9 February 2020 08:43 CET | Update | https://www.mdpi.com/2313-433X/4/3/50 |
| article html file updated | 1 October 2019 07:24 CEST | Update | - |
| article html file updated | 1 May 2019 14:03 CEST | Update | - |
| article html file updated | 17 April 2019 13:41 CEST | Update | - |
| article html file updated | 29 March 2019 04:09 CET | Update | - |
| article html file updated | 26 March 2018 12:49 CEST | Update | - |
| article html file updated | 6 March 2018 05:24 CET | Original file | - |
| article xml uploaded. | 6 March 2018 05:22 CET | Update | https://www.mdpi.com/2313-433X/4/3/50/xml |
| article pdf uploaded. | 6 March 2018 05:22 CET | Version of Record | https://www.mdpi.com/2313-433X/4/3/50/pdf |
