| article html file updated | 9 February 2020 08:35 CET | Update | https://www.mdpi.com/2412-3811/3/1/6 |
| article html file updated | 1 May 2019 14:21 CEST | Update | - |
| article html file updated | 17 April 2019 13:58 CEST | Update | - |
| article html file updated | 29 March 2019 03:49 CET | Update | - |
| article html file updated | 4 March 2018 10:10 CET | Original file | - |
| article xml uploaded. | 4 March 2018 10:08 CET | Update | https://www.mdpi.com/2412-3811/3/1/6/xml |
| article pdf uploaded. | 4 March 2018 10:08 CET | Version of Record | https://www.mdpi.com/2412-3811/3/1/6/pdf |
