| article html file updated | 6 February 2020 13:08 CET | Update | https://www.mdpi.com/1996-1073/7/11/6837 |
| article html file updated | 7 May 2019 06:32 CEST | Update | - |
| article html file updated | 25 March 2019 16:33 CET | Update | - |
| article html file updated | 21 August 2015 00:23 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/1996-1073/7/11/6837/xml |
| article pdf uploaded. | 24 October 2014 17:13 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/11/6837/pdf |
