| article html file updated | 7 February 2020 12:32 CET | Update | https://www.mdpi.com/1996-1944/9/8/639 |
| article html file updated | 5 May 2019 08:37 CEST | Update | - |
| article html file updated | 27 March 2019 11:50 CET | Update | - |
| article html file updated | 26 August 2016 06:56 CEST | Update | - |
| article html file updated | 29 July 2016 09:15 CEST | Original file | - |
| article xml uploaded. | 29 July 2016 09:13 CEST | Update | https://www.mdpi.com/1996-1944/9/8/639/xml |
| article pdf uploaded. | 29 July 2016 09:13 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/8/639/pdf |
