| article html file updated | 9 February 2020 03:01 CET | Update | https://www.mdpi.com/2313-433X/4/1/22 |
| article html file updated | 29 September 2019 21:47 CEST | Update | N/A |
| article html file updated | 2 May 2019 02:19 CEST | Update | N/A |
| article html file updated | 18 April 2019 00:34 CEST | Update | N/A |
| article html file updated | 28 March 2019 15:28 CET | Update | N/A |
| article html file updated | 2 February 2018 09:16 CET | Update | N/A |
| article html file updated | 14 January 2018 08:10 CET | Original file | N/A |
| article xml uploaded. | 14 January 2018 08:08 CET | Update | https://www.mdpi.com/2313-433X/4/1/22/xml |
| article xml uploaded. | 14 January 2018 08:08 CET | Original file | N/A |
| article pdf uploaded. | 14 January 2018 08:08 CET | Version of Record | https://www.mdpi.com/2313-433X/4/1/22/pdf |
