| article html file updated | 6 February 2020 12:38 CET | Update | https://www.mdpi.com/1996-1073/7/10/6306 |
| article html file updated | 7 May 2019 07:31 CEST | Update | - |
| article html file updated | 22 March 2019 02:01 CET | Update | - |
| article html file updated | 20 August 2015 22:00 CEST | Update | - |
| article html file updated | 10 November 2014 11:17 CET | Original file | - |
| article xml file uploaded | 10 November 2014 11:17 CET | Original file | https://www.mdpi.com/1996-1073/7/10/6306/xml |
| article pdf uploaded. | 30 September 2014 14:19 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/10/6306/pdf |
