| article html file updated | 8 February 2020 15:10 CET | Update | https://www.mdpi.com/1424-8220/17/9/2013 |
| article html file updated | 26 September 2019 22:03 CEST | Update | - |
| article html file updated | 3 May 2019 03:51 CEST | Update | - |
| article html file updated | 30 September 2017 14:44 CEST | Update | - |
| article html file updated | 4 September 2017 03:00 CEST | Original file | - |
| article xml uploaded. | 4 September 2017 02:59 CEST | Update | https://www.mdpi.com/1424-8220/17/9/2013/xml |
| article xml uploaded. | 4 September 2017 02:59 CEST | Original file | - |
| article pdf uploaded. | 4 September 2017 02:59 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/9/2013/pdf |
| article pdf uploaded. | 2 September 2017 10:16 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/9/2013/pdf-vor |
