| article html file updated | 8 February 2020 15:14 CET | Update | https://www.mdpi.com/1660-3397/15/9/284 |
| article html file updated | 26 September 2019 22:19 CEST | Update | - |
| article html file updated | 3 May 2019 03:45 CEST | Update | - |
| article html file updated | 30 September 2017 12:33 CEST | Update | - |
| article html file updated | 4 September 2017 08:05 CEST | Original file | - |
| article xml uploaded. | 4 September 2017 08:04 CEST | Update | https://www.mdpi.com/1660-3397/15/9/284/xml |
| article xml uploaded. | 4 September 2017 08:04 CEST | Original file | - |
| article pdf uploaded. | 4 September 2017 08:04 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/9/284/pdf |
