| article html file updated | 7 February 2020 11:53 CET | Update | https://www.mdpi.com/1996-1073/9/7/561 |
| article html file updated | 5 May 2019 09:48 CEST | Update | - |
| article html file updated | 27 March 2019 10:39 CET | Update | - |
| article html file updated | 27 July 2016 10:02 CEST | Update | - |
| article html file updated | 19 July 2016 09:07 CEST | Original file | - |
| article xml uploaded. | 19 July 2016 09:06 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/561/xml |
| article pdf uploaded. | 19 July 2016 09:06 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/561/pdf |
