| article html file updated | 7 February 2020 17:58 CET | Update | https://www.mdpi.com/1996-1944/9/11/923 |
| article html file updated | 4 May 2019 22:37 CEST | Update | - |
| article html file updated | 30 November 2016 05:57 CET | Update | - |
| article html file updated | 14 November 2016 12:51 CET | Original file | - |
| article xml uploaded. | 14 November 2016 12:49 CET | Update | https://www.mdpi.com/1996-1944/9/11/923/xml |
| article xml uploaded. | 14 November 2016 12:49 CET | Original file | - |
| article pdf uploaded. | 14 November 2016 12:49 CET | Version of Record | https://www.mdpi.com/1996-1944/9/11/923/pdf |
