| article html file updated | 7 February 2020 12:33 CET | Update | https://www.mdpi.com/1996-1944/9/8/640 |
| article html file updated | 5 May 2019 08:36 CEST | Update | - |
| article html file updated | 27 March 2019 11:51 CET | Update | - |
| article html file updated | 26 August 2016 06:56 CEST | Update | - |
| article html file updated | 29 July 2016 12:36 CEST | Original file | - |
| article xml uploaded. | 29 July 2016 12:01 CEST | Original file | https://www.mdpi.com/1996-1944/9/8/640/xml |
| article pdf uploaded. | 29 July 2016 12:01 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/8/640/pdf |
