| article html file updated | 7 February 2020 10:44 CET | Update | https://www.mdpi.com/1996-1073/9/7/490 |
| article html file updated | 5 May 2019 11:53 CEST | Update | - |
| article html file updated | 27 March 2019 08:29 CET | Update | - |
| article html file updated | 27 July 2016 09:28 CEST | Update | - |
| article html file updated | 24 June 2016 11:32 CEST | Original file | - |
| article xml uploaded. | 24 June 2016 11:30 CEST | Original file | https://www.mdpi.com/1996-1073/9/7/490/xml |
| article pdf uploaded. | 24 June 2016 11:30 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/7/490/pdf |
