| article html file updated | 7 February 2020 06:24 CET | Update | https://www.mdpi.com/1996-1944/9/4/230 |
| article html file updated | 5 May 2019 20:27 CEST | Update | - |
| article html file updated | 27 March 2019 00:19 CET | Update | - |
| article html file updated | 28 April 2016 10:42 CEST | Update | - |
| article html file updated | 25 March 2016 09:58 CET | Original file | - |
| article xml uploaded. | 25 March 2016 09:57 CET | Original file | https://www.mdpi.com/1996-1944/9/4/230/xml |
| article pdf uploaded. | 25 March 2016 09:57 CET | Version of Record | https://www.mdpi.com/1996-1944/9/4/230/pdf |
