| article html file updated | 11 February 2020 14:00 CET | Update | https://www.mdpi.com/2227-9067/6/2/23 |
| article html file updated | 14 October 2019 12:51 CEST | Update | - |
| article html file updated | 26 April 2019 20:45 CEST | Update | - |
| article html file updated | 12 April 2019 16:34 CEST | Update | - |
| article html file updated | 3 April 2019 15:41 CEST | Update | - |
| article html file updated | 28 February 2019 15:02 CET | Update | - |
| article html file updated | 14 February 2019 12:35 CET | Original file | - |
| article pdf uploaded. | 14 February 2019 12:33 CET | Updated version of record | https://www.mdpi.com/2227-9067/6/2/23/pdf |
| article xml uploaded. | 14 February 2019 12:33 CET | Update | https://www.mdpi.com/2227-9067/6/2/23/xml |
| article xml file uploaded | 14 February 2019 12:33 CET | Update | - |
| article pdf uploaded. | 5 February 2019 14:44 CET | Version of Record | https://www.mdpi.com/2227-9067/6/2/23/pdf-vor |
| article xml file uploaded | 5 February 2019 14:44 CET | Original file | - |
