| article html file updated | 7 February 2020 10:39 CET | Update | https://www.mdpi.com/1996-1944/9/7/502 |
| article html file updated | 5 May 2019 12:02 CEST | Update | - |
| article html file updated | 27 March 2019 08:21 CET | Update | - |
| article html file updated | 29 July 2016 10:28 CEST | Update | - |
| article html file updated | 23 June 2016 14:40 CEST | Original file | - |
| article xml uploaded. | 23 June 2016 14:39 CEST | Original file | https://www.mdpi.com/1996-1944/9/7/502/xml |
| article pdf uploaded. | 23 June 2016 14:39 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/7/502/pdf |
