| article html file updated | 9 February 2020 02:10 CET | Update | https://www.mdpi.com/2313-433X/4/1/13 |
| article html file updated | 29 September 2019 17:13 CEST | Update | - |
| article html file updated | 2 May 2019 04:04 CEST | Update | - |
| article html file updated | 18 April 2019 02:10 CEST | Update | - |
| article html file updated | 28 March 2019 13:30 CET | Update | - |
| article html file updated | 2 February 2018 09:14 CET | Update | - |
| article html file updated | 8 January 2018 06:16 CET | Update | - |
| article xml uploaded. | 8 January 2018 06:15 CET | Update | https://www.mdpi.com/2313-433X/4/1/13/xml |
| article pdf uploaded. | 8 January 2018 06:15 CET | Updated version of record | https://www.mdpi.com/2313-433X/4/1/13/pdf |
| article html file updated | 6 January 2018 08:51 CET | Original file | - |
| article pdf uploaded. | 6 January 2018 08:49 CET | Version of Record | https://www.mdpi.com/2313-433X/4/1/13/pdf-vor |
