| article html file updated | 6 February 2020 20:16 CET | Update | https://www.mdpi.com/2071-1050/7/7/8621 |
| article html file updated | 20 September 2019 23:39 CEST | Update | - |
| article html file updated | 6 May 2019 16:35 CEST | Update | - |
| article html file updated | 26 March 2019 05:49 CET | Update | - |
| article html file updated | 21 August 2015 14:23 CEST | Update | - |
| article html file updated | 19 August 2015 10:09 CEST | Original file | - |
| article xml file uploaded | 19 August 2015 10:09 CEST | Original file | https://www.mdpi.com/2071-1050/7/7/8621/xml |
| article pdf uploaded. | 2 July 2015 09:27 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/7/8621/pdf |
