| article html file updated | 7 February 2020 14:48 CET | Update | https://www.mdpi.com/1424-8220/16/9/1468 |
| article html file updated | 5 May 2019 04:26 CEST | Update | N/A |
| article html file updated | 27 September 2016 07:17 CEST | Update | N/A |
| article html file updated | 10 September 2016 09:43 CEST | Original file | N/A |
| article xml uploaded. | 10 September 2016 09:41 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1468/xml |
| article xml uploaded. | 10 September 2016 09:41 CEST | Original file | N/A |
| article pdf uploaded. | 10 September 2016 09:41 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1468/pdf |
