| article html file updated | 11 February 2020 10:40 CET | Update | https://www.mdpi.com/2410-390X/3/1/6 |
| article html file updated | 27 April 2019 03:09 CEST | Update | - |
| article html file updated | 12 April 2019 23:08 CEST | Update | - |
| article html file updated | 3 April 2019 07:24 CEST | Update | - |
| article html file updated | 22 January 2019 10:11 CET | Original file | - |
| article pdf uploaded. | 22 January 2019 10:09 CET | Version of Record | https://www.mdpi.com/2410-390X/3/1/6/pdf |
| article xml uploaded. | 22 January 2019 10:09 CET | Update | https://www.mdpi.com/2410-390X/3/1/6/xml |
| article xml file uploaded | 22 January 2019 10:09 CET | Original file | - |
