| article html file updated | 8 February 2020 08:49 CET | Update | https://www.mdpi.com/2072-6643/9/6/635 |
| article html file updated | 25 September 2019 11:10 CEST | Update | - |
| article html file updated | 3 May 2019 16:27 CEST | Update | - |
| article html file updated | 29 June 2017 11:49 CEST | Update | - |
| article html file updated | 20 June 2017 22:24 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 15:38 CEST | Update | https://www.mdpi.com/2072-6643/9/6/635/xml |
| article pdf uploaded. | 20 June 2017 15:38 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/635/pdf |
