| article html file updated | 6 February 2020 04:30 CET | Update | https://www.mdpi.com/2072-6651/5/9/1629 |
| article html file updated | 8 May 2019 00:11 CEST | Update | - |
| article html file updated | 21 March 2019 04:53 CET | Update | - |
| article html file updated | 17 June 2015 13:23 CEST | Update | - |
| article html file updated | 25 October 2013 10:57 CEST | Original file | - |
| article xml file uploaded | 25 October 2013 10:53 CEST | Original file | https://www.mdpi.com/2072-6651/5/9/1629/xml |
| article pdf uploaded. | 24 September 2013 10:50 CEST | Version of Record | https://www.mdpi.com/2072-6651/5/9/1629/pdf |
