| article html file updated | 6 February 2020 12:05 CET | Update | https://www.mdpi.com/1996-1073/7/9/5995 |
| article html file updated | 7 May 2019 08:34 CEST | Update | - |
| article html file updated | 22 March 2019 00:32 CET | Update | - |
| article html file updated | 20 August 2015 17:59 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/1996-1073/7/9/5995/xml |
| article pdf uploaded. | 10 September 2014 09:31 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/9/5995/pdf |
