| article html file updated | 10 February 2020 23:07 CET | Update | https://www.mdpi.com/2313-433X/4/12/137 |
| article html file updated | 28 April 2019 04:00 CEST | Update | - |
| article html file updated | 14 April 2019 00:08 CEST | Update | - |
| article html file updated | 2 April 2019 01:52 CEST | Update | - |
| article html file updated | 26 December 2018 03:38 CET | Update | - |
| article html file updated | 24 November 2018 03:51 CET | Original file | - |
| article pdf uploaded. | 24 November 2018 03:50 CET | Version of Record | https://www.mdpi.com/2313-433X/4/12/137/pdf |
| article xml uploaded. | 24 November 2018 03:50 CET | Update | https://www.mdpi.com/2313-433X/4/12/137/xml |
| article xml file uploaded | 24 November 2018 03:50 CET | Original file | - |
