| article html file updated | 7 February 2020 15:06 CET | Update | https://www.mdpi.com/1424-8220/16/9/1515 |
| article html file updated | 5 May 2019 03:53 CEST | Update | - |
| article html file updated | 27 September 2016 07:34 CEST | Update | - |
| article html file updated | 16 September 2016 13:43 CEST | Original file | - |
| article xml uploaded. | 16 September 2016 13:42 CEST | Update | https://www.mdpi.com/1424-8220/16/9/1515/xml |
| article xml uploaded. | 16 September 2016 13:42 CEST | Original file | - |
| article pdf uploaded. | 16 September 2016 13:42 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/9/1515/pdf |
