| article html file updated | 12 February 2020 02:35 CET | Update | https://www.mdpi.com/2075-4701/9/4/404 |
| article html file updated | 17 October 2019 15:49 CEST | Update | - |
| article html file updated | 25 April 2019 17:44 CEST | Update | - |
| article html file updated | 17 April 2019 12:55 CEST | Original file | - |
| article pdf uploaded. | 17 April 2019 12:53 CEST | Updated version of record | https://www.mdpi.com/2075-4701/9/4/404/pdf |
| article xml uploaded. | 17 April 2019 12:53 CEST | Update | https://www.mdpi.com/2075-4701/9/4/404/xml |
| article xml file uploaded | 17 April 2019 12:53 CEST | Update | - |
| article pdf uploaded. | 2 April 2019 17:14 CEST | Version of Record | https://www.mdpi.com/2075-4701/9/4/404/pdf-vor |
| article xml file uploaded | 2 April 2019 17:14 CEST | Original file | - |
