| article html file updated | 6 February 2020 11:45 CET | Update | https://www.mdpi.com/1996-1073/7/9/5502 |
| article html file updated | 7 May 2019 09:11 CEST | Update | - |
| article html file updated | 21 March 2019 23:43 CET | Update | - |
| article html file updated | 20 August 2015 16:26 CEST | Update | - |
| article html file updated | 28 October 2014 03:25 CET | Original file | - |
| article xml file uploaded | 28 October 2014 03:25 CET | Original file | https://www.mdpi.com/1996-1073/7/9/5502/xml |
| article pdf uploaded. | 2 September 2014 13:47 CEST | Updated version of record | https://www.mdpi.com/1996-1073/7/9/5502/pdf |
| article pdf uploaded. | 29 August 2014 14:33 CEST | Updated version of record | https://www.mdpi.com/1996-1073/7/9/5502/pdf-vor |
| article pdf uploaded. | 29 August 2014 14:29 CEST | Updated version of record | https://www.mdpi.com/1996-1073/7/9/5502/pdf-vor |
| article pdf uploaded. | 25 August 2014 14:06 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/9/5502/pdf-vor |
