| article html file updated | 8 February 2020 16:25 CET | Update | https://www.mdpi.com/1424-8220/17/9/2137 |
| article html file updated | 27 September 2019 04:47 CEST | Update | - |
| article html file updated | 3 May 2019 01:34 CEST | Update | - |
| article html file updated | 30 September 2017 15:09 CEST | Update | - |
| article html file updated | 18 September 2017 09:26 CEST | Original file | - |
| article xml uploaded. | 18 September 2017 09:24 CEST | Update | https://www.mdpi.com/1424-8220/17/9/2137/xml |
| article xml uploaded. | 18 September 2017 09:24 CEST | Original file | - |
| article pdf uploaded. | 18 September 2017 09:24 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/9/2137/pdf |
| article pdf uploaded. | 16 September 2017 12:22 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/9/2137/pdf-vor |
