| article html file updated | 7 February 2020 17:56 CET | Update | https://www.mdpi.com/2079-4991/6/11/209 |
| article html file updated | 4 May 2019 22:40 CEST | Update | - |
| article html file updated | 2 December 2016 05:41 CET | Update | - |
| article html file updated | 12 November 2016 11:20 CET | Original file | - |
| article xml uploaded. | 12 November 2016 11:19 CET | Original file | https://www.mdpi.com/2079-4991/6/11/209/xml |
| article pdf uploaded. | 12 November 2016 11:19 CET | Version of Record | https://www.mdpi.com/2079-4991/6/11/209/pdf |
