| article html file updated | 6 February 2020 22:56 CET | Update | https://www.mdpi.com/2071-1050/7/9/12807 |
| article html file updated | 6 May 2019 11:02 CEST | Update | - |
| article html file updated | 26 March 2019 11:01 CET | Update | - |
| article html file updated | 12 October 2015 12:32 CEST | Original file | - |
| article xml file uploaded | 12 October 2015 12:32 CEST | Original file | https://www.mdpi.com/2071-1050/7/9/12807/xml |
| article pdf uploaded. | 18 September 2015 11:41 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/9/12807/pdf |
