| article html file updated | 7 February 2020 07:44 CET | Update | https://www.mdpi.com/1996-1073/9/5/315 |
| article html file updated | 5 May 2019 17:41 CEST | Update | - |
| article html file updated | 27 March 2019 02:52 CET | Update | - |
| article html file updated | 26 May 2016 12:24 CEST | Update | - |
| article html file updated | 25 April 2016 08:45 CEST | Original file | - |
| article xml uploaded. | 25 April 2016 08:42 CEST | Update | https://www.mdpi.com/1996-1073/9/5/315/xml |
| article pdf uploaded. | 25 April 2016 08:42 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/5/315/pdf |
