| article html file updated | 8 February 2020 10:21 CET | Update | https://www.mdpi.com/2073-8994/9/7/109 |
| article html file updated | 25 September 2019 19:18 CEST | Update | - |
| article html file updated | 3 May 2019 13:38 CEST | Update | - |
| article html file updated | 31 July 2017 10:00 CEST | Update | - |
| article html file updated | 6 July 2017 16:42 CEST | Original file | - |
| article xml uploaded. | 6 July 2017 16:41 CEST | Original file | https://www.mdpi.com/2073-8994/9/7/109/xml |
| article pdf uploaded. | 6 July 2017 16:41 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/7/109/pdf |
