| article html file updated | 6 February 2020 12:08 CET | Update | https://www.mdpi.com/1996-1944/7/9/6486 |
| article html file updated | 7 May 2019 08:29 CEST | Update | - |
| article html file updated | 22 March 2019 00:39 CET | Update | - |
| article html file updated | 20 August 2015 18:27 CEST | Update | - |
| article html file updated | 20 October 2014 11:39 CEST | Original file | - |
| article xml file uploaded | 20 October 2014 11:39 CEST | Original file | https://www.mdpi.com/1996-1944/7/9/6486/xml |
| article pdf uploaded. | 15 September 2014 09:10 CEST | Updated version of record | https://www.mdpi.com/1996-1944/7/9/6486/pdf |
| article pdf uploaded. | 11 September 2014 11:42 CEST | Version of Record | https://www.mdpi.com/1996-1944/7/9/6486/pdf-vor |
