| article html file updated | 6 February 2020 12:48 CET | Update | https://www.mdpi.com/1996-1073/7/10/6549 |
| article html file updated | 7 May 2019 07:10 CEST | Update | - |
| article html file updated | 22 March 2019 02:29 CET | Update | - |
| article html file updated | 20 August 2015 22:57 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/1996-1073/7/10/6549/xml |
| article pdf uploaded. | 13 October 2014 16:09 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/10/6549/pdf |
