| article html file updated | 8 February 2020 19:54 CET | Update | https://www.mdpi.com/2313-433X/3/4/48 |
| article html file updated | 28 September 2019 03:07 CEST | Update | - |
| article html file updated | 2 May 2019 17:56 CEST | Update | - |
| article html file updated | 6 February 2018 10:45 CET | Update | - |
| article html file updated | 31 October 2017 07:30 CET | Original file | - |
| article xml uploaded. | 31 October 2017 07:29 CET | Update | https://www.mdpi.com/2313-433X/3/4/48/xml |
| article xml uploaded. | 31 October 2017 07:29 CET | Original file | - |
| article pdf uploaded. | 31 October 2017 07:29 CET | Version of Record | https://www.mdpi.com/2313-433X/3/4/48/pdf |
