| article html file updated | 12 February 2020 16:13 CET | Update | https://www.mdpi.com/2073-4395/9/6/271 |
| article html file updated | 20 October 2019 23:38 CEST | Update | - |
| article html file updated | 5 July 2019 15:50 CEST | Update | - |
| article html file updated | 21 June 2019 13:20 CEST | Original file | - |
| article pdf uploaded. | 21 June 2019 13:19 CEST | Updated version of record | https://www.mdpi.com/2073-4395/9/6/271/pdf |
| article xml uploaded. | 21 June 2019 13:19 CEST | Update | https://www.mdpi.com/2073-4395/9/6/271/xml |
| article xml file uploaded | 21 June 2019 13:19 CEST | Update | - |
| article pdf uploaded. | 29 May 2019 16:06 CEST | Version of Record | https://www.mdpi.com/2073-4395/9/6/271/pdf-vor |
| article xml file uploaded | 29 May 2019 16:06 CEST | Original file | - |
