| article html file updated | 7 February 2020 12:02 CET | Update | https://www.mdpi.com/1996-1073/9/7/569 |
| article html file updated | 5 May 2019 09:31 CEST | Update | - |
| article html file updated | 27 March 2019 10:57 CET | Update | - |
| article html file updated | 27 July 2016 10:04 CEST | Update | - |
| article html file updated | 21 July 2016 07:52 CEST | Original file | - |
| article xml uploaded. | 21 July 2016 07:50 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/569/xml |
| article pdf uploaded. | 21 July 2016 07:50 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/569/pdf |
