| article html file updated | 7 February 2020 11:51 CET | Update | https://www.mdpi.com/1996-1073/9/7/554 |
| article html file updated | 5 May 2019 09:51 CEST | Update | - |
| article html file updated | 27 March 2019 10:35 CET | Update | - |
| article html file updated | 27 July 2016 10:01 CEST | Update | - |
| article html file updated | 18 July 2016 11:53 CEST | Original file | - |
| article xml uploaded. | 18 July 2016 11:52 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/554/xml |
| article pdf uploaded. | 18 July 2016 11:52 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/554/pdf |
