| article html file updated | 8 February 2020 15:11 CET | Update | https://www.mdpi.com/1424-8220/17/9/2015 |
| article html file updated | 26 September 2019 22:07 CEST | Update | - |
| article html file updated | 3 May 2019 03:49 CEST | Update | - |
| article html file updated | 30 September 2017 14:44 CEST | Update | - |
| article html file updated | 4 September 2017 05:13 CEST | Original file | - |
| article xml uploaded. | 4 September 2017 05:12 CEST | Update | https://www.mdpi.com/1424-8220/17/9/2015/xml |
| article xml uploaded. | 4 September 2017 05:12 CEST | Original file | - |
| article pdf uploaded. | 4 September 2017 05:12 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/9/2015/pdf |
| article pdf uploaded. | 2 September 2017 11:08 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/9/2015/pdf-vor |
