| article html file updated | 7 February 2020 22:05 CET | Update | https://www.mdpi.com/2313-433X/3/1/7 |
| article html file updated | 4 May 2019 13:52 CEST | Update | N/A |
| article html file updated | 24 January 2017 03:45 CET | Original file | N/A |
| article xml uploaded. | 24 January 2017 03:44 CET | Update | https://www.mdpi.com/2313-433X/3/1/7/xml |
| article xml uploaded. | 24 January 2017 03:44 CET | Original file | N/A |
| article pdf uploaded. | 24 January 2017 03:44 CET | Version of Record | https://www.mdpi.com/2313-433X/3/1/7/pdf |
