| article html file updated | 8 February 2020 08:54 CET | Update | https://www.mdpi.com/2073-4441/9/6/445 |
| article html file updated | 25 September 2019 11:41 CEST | Update | - |
| article html file updated | 3 May 2019 16:17 CEST | Update | - |
| article html file updated | 29 June 2017 12:20 CEST | Update | - |
| article html file updated | 21 June 2017 15:24 CEST | Original file | - |
| article xml uploaded. | 21 June 2017 15:22 CEST | Update | https://www.mdpi.com/2073-4441/9/6/445/xml |
| article pdf uploaded. | 21 June 2017 15:22 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/445/pdf |
