| article html file updated | 6 February 2020 13:20 CET | Update | https://www.mdpi.com/1996-1073/7/11/7067 |
| article html file updated | 7 May 2019 06:07 CEST | Update | - |
| article html file updated | 25 March 2019 16:58 CET | Update | - |
| article html file updated | 21 August 2015 01:02 CEST | Update | - |
| article html file updated | 10 December 2014 11:25 CET | Original file | - |
| article xml file uploaded | 10 December 2014 11:25 CET | Original file | https://www.mdpi.com/1996-1073/7/11/7067/xml |
| article pdf uploaded. | 3 November 2014 13:29 CET | Version of Record | https://www.mdpi.com/1996-1073/7/11/7067/pdf |
