| article html file updated | 7 February 2020 14:19 CET | Update | https://www.mdpi.com/1424-8220/16/9/1409 |
| article html file updated | 5 May 2019 05:19 CEST | Update | - |
| article html file updated | 27 March 2019 15:47 CET | Update | - |
| article html file updated | 27 September 2016 06:55 CEST | Update | - |
| article html file updated | 1 September 2016 14:53 CEST | Original file | - |
| article xml uploaded. | 1 September 2016 14:52 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1409/xml |
| article xml uploaded. | 1 September 2016 14:52 CEST | Original file | - |
| article pdf uploaded. | 1 September 2016 14:52 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1409/pdf |
