| article html file updated | 14 February 2020 02:43 CET | Update | https://www.mdpi.com/2227-7102/9/4/257 |
| article html file updated | 24 October 2019 04:26 CEST | Update | - |
| article pdf uploaded. | 24 October 2019 04:24 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/4/257/pdf |
| article xml uploaded. | 24 October 2019 04:24 CEST | Update | https://www.mdpi.com/2227-7102/9/4/257/xml |
| article xml file uploaded | 24 October 2019 04:24 CEST | Update | - |
| article html file updated | 23 October 2019 10:07 CEST | Original file | - |
| article pdf uploaded. | 23 October 2019 09:57 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/4/257/pdf-vor |
| article xml uploaded. | 23 October 2019 09:57 CEST | Update | - |
| article xml file uploaded | 23 October 2019 09:57 CEST | Update | - |
| article pdf uploaded. | 21 October 2019 15:34 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/257/pdf-vor |
| article xml file uploaded | 21 October 2019 15:34 CEST | Original file | - |
