| article html file updated | 7 February 2020 09:19 CET | Update | https://www.mdpi.com/2071-1050/8/6/508 |
| article html file updated | 5 May 2019 14:37 CEST | Update | - |
| article html file updated | 27 March 2019 05:49 CET | Update | - |
| article html file updated | 29 June 2016 05:20 CEST | Update | - |
| article html file updated | 26 May 2016 10:29 CEST | Original file | - |
| article xml uploaded. | 26 May 2016 10:27 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/508/xml |
| article pdf uploaded. | 26 May 2016 10:27 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/508/pdf |
