| article html file updated | 7 February 2020 06:56 CET | Update | https://www.mdpi.com/1996-1944/9/4/276 |
| article html file updated | 5 May 2019 19:23 CEST | Update | - |
| article html file updated | 27 March 2019 01:13 CET | Update | - |
| article html file updated | 28 April 2016 11:02 CEST | Update | - |
| article html file updated | 7 April 2016 08:46 CEST | Original file | - |
| article xml uploaded. | 7 April 2016 08:44 CEST | Original file | https://www.mdpi.com/1996-1944/9/4/276/xml |
| article pdf uploaded. | 7 April 2016 08:44 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/4/276/pdf |
