| article html file updated | 7 February 2020 12:14 CET | Update | https://www.mdpi.com/2079-4991/6/8/137 |
| article html file updated | 5 May 2019 09:11 CEST | Update | - |
| article html file updated | 27 March 2019 11:17 CET | Update | - |
| article html file updated | 26 August 2016 10:50 CEST | Update | - |
| article html file updated | 25 July 2016 08:41 CEST | Original file | - |
| article xml uploaded. | 25 July 2016 08:40 CEST | Update | https://www.mdpi.com/2079-4991/6/8/137/xml |
| article pdf uploaded. | 25 July 2016 08:40 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/8/137/pdf |
