| article html file updated | 7 February 2020 16:59 CET | Update | https://www.mdpi.com/1996-1073/9/11/868 |
| article html file updated | 5 May 2019 00:26 CEST | Update | - |
| article html file updated | 30 November 2016 05:09 CET | Update | - |
| article html file updated | 26 October 2016 09:29 CEST | Original file | - |
| article xml uploaded. | 26 October 2016 09:28 CEST | Update | https://www.mdpi.com/1996-1073/9/11/868/xml |
| article xml uploaded. | 26 October 2016 09:28 CEST | Original file | - |
| article pdf uploaded. | 26 October 2016 09:28 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/11/868/pdf |
