| article html file updated | 8 February 2020 16:27 CET | Update | https://www.mdpi.com/1424-8220/17/9/2138 |
| article html file updated | 27 September 2019 04:56 CEST | Update | - |
| article html file updated | 3 May 2019 01:30 CEST | Update | - |
| article html file updated | 30 September 2017 15:09 CEST | Update | - |
| article html file updated | 17 September 2017 11:13 CEST | Original file | - |
| article xml uploaded. | 17 September 2017 11:12 CEST | Update | https://www.mdpi.com/1424-8220/17/9/2138/xml |
| article xml uploaded. | 17 September 2017 11:12 CEST | Original file | - |
| article pdf uploaded. | 17 September 2017 11:12 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/9/2138/pdf |
