| article html file updated | 7 February 2020 16:01 CET | Update | https://www.mdpi.com/1996-1073/9/10/797 |
| article html file updated | 5 May 2019 02:15 CEST | Update | - |
| article html file updated | 28 October 2016 09:46 CEST | Original file | - |
| article pdf uploaded. | 7 October 2016 13:00 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/10/797/pdf |
