| article html file updated | 6 February 2020 11:50 CET | Update | https://www.mdpi.com/1996-1073/7/9/5647 |
| article html file updated | 7 May 2019 09:01 CEST | Update | - |
| article html file updated | 21 March 2019 23:56 CET | Update | - |
| article html file updated | 20 August 2015 16:48 CEST | Update | - |
| article html file updated | 22 October 2014 07:37 CEST | Original file | - |
| article xml file uploaded | 22 October 2014 07:37 CEST | Original file | https://www.mdpi.com/1996-1073/7/9/5647/xml |
| article pdf uploaded. | 28 August 2014 09:22 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/9/5647/pdf |
