| article html file updated | 8 February 2020 08:53 CET | Update | https://www.mdpi.com/2073-4441/9/6/446 |
| article html file updated | 25 September 2019 11:34 CEST | Update | - |
| article html file updated | 3 May 2019 16:19 CEST | Update | - |
| article html file updated | 29 June 2017 12:20 CEST | Update | - |
| article html file updated | 21 June 2017 13:27 CEST | Original file | - |
| article xml uploaded. | 21 June 2017 13:25 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/446/xml |
| article pdf uploaded. | 21 June 2017 13:25 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/446/pdf |
