| article html file updated | 7 February 2020 09:31 CET | Update | https://www.mdpi.com/1996-1944/9/6/429 |
| article html file updated | 5 May 2019 14:10 CEST | Update | - |
| article html file updated | 27 March 2019 06:13 CET | Update | - |
| article html file updated | 28 June 2016 12:12 CEST | Update | - |
| article html file updated | 31 May 2016 11:15 CEST | Original file | - |
| article xml uploaded. | 31 May 2016 11:14 CEST | Update | https://www.mdpi.com/1996-1944/9/6/429/xml |
| article pdf uploaded. | 31 May 2016 11:14 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/429/pdf |
