| article html file updated | 6 February 2020 13:11 CET | Update | https://www.mdpi.com/1996-1073/7/11/6856 |
| article html file updated | 7 May 2019 06:24 CEST | Update | - |
| article html file updated | 25 March 2019 16:41 CET | Update | - |
| article html file updated | 21 August 2015 00:38 CEST | Update | - |
| article html file updated | 10 December 2014 09:53 CET | Original file | - |
| article xml file uploaded | 10 December 2014 09:53 CET | Original file | https://www.mdpi.com/1996-1073/7/11/6856/xml |
| article pdf uploaded. | 28 October 2014 12:51 CET | Version of Record | https://www.mdpi.com/1996-1073/7/11/6856/pdf |
