| article html file updated | 6 February 2020 21:45 CET | Update | https://www.mdpi.com/2071-1050/7/8/11068 |
| article html file updated | 6 May 2019 13:34 CEST | Update | N/A |
| article html file updated | 26 March 2019 08:42 CET | Update | N/A |
| article html file updated | 3 September 2015 03:57 CEST | Original file | N/A |
| article xml file uploaded | 3 September 2015 03:57 CEST | Original file | https://www.mdpi.com/2071-1050/7/8/11068/xml |
| article pdf uploaded. | 14 August 2015 11:12 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/8/11068/pdf |
