| article html file updated | 12 February 2020 03:49 CET | Update | https://www.mdpi.com/2075-4701/9/4/421 |
| article html file updated | 17 October 2019 22:52 CEST | Update | - |
| article html file updated | 25 April 2019 15:17 CEST | Update | - |
| article html file updated | 23 April 2019 12:44 CEST | Original file | - |
| article pdf uploaded. | 23 April 2019 12:43 CEST | Updated version of record | https://www.mdpi.com/2075-4701/9/4/421/pdf |
| article xml uploaded. | 23 April 2019 12:43 CEST | Update | https://www.mdpi.com/2075-4701/9/4/421/xml |
| article xml file uploaded | 23 April 2019 12:43 CEST | Update | - |
| article pdf uploaded. | 8 April 2019 15:32 CEST | Version of Record | https://www.mdpi.com/2075-4701/9/4/421/pdf-vor |
| article xml file uploaded | 8 April 2019 15:32 CEST | Original file | - |
