| article html file updated | 12 February 2020 03:47 CET | Update | https://www.mdpi.com/2227-7072/7/2/20 |
| article html file updated | 17 October 2019 22:42 CEST | Update | - |
| article html file updated | 5 July 2019 22:12 CEST | Update | - |
| article html file updated | 29 April 2019 12:32 CEST | Original file | - |
| article pdf uploaded. | 29 April 2019 12:30 CEST | Updated version of record | https://www.mdpi.com/2227-7072/7/2/20/pdf |
| article xml uploaded. | 29 April 2019 12:30 CEST | Update | https://www.mdpi.com/2227-7072/7/2/20/xml |
| article xml file uploaded | 29 April 2019 12:30 CEST | Update | - |
| article pdf uploaded. | 8 April 2019 14:42 CEST | Version of Record | https://www.mdpi.com/2227-7072/7/2/20/pdf-vor |
| article xml file uploaded | 8 April 2019 14:42 CEST | Original file | - |
