| article html file updated | 6 February 2020 09:33 CET | Update | https://www.mdpi.com/1996-1944/7/6/4088 |
| article html file updated | 7 May 2019 13:58 CEST | Update | - |
| article html file updated | 21 March 2019 17:46 CET | Update | - |
| article html file updated | 20 August 2015 08:25 CEST | Update | - |
| article html file updated | 11 July 2014 10:58 CEST | Original file | - |
| article xml file uploaded | 11 July 2014 10:58 CEST | Original file | https://www.mdpi.com/1996-1944/7/6/4088/xml |
| article pdf uploaded. | 27 May 2014 13:12 CEST | Version of Record | https://www.mdpi.com/1996-1944/7/6/4088/pdf |
