| article html file updated | 7 February 2020 10:28 CET | Update | https://www.mdpi.com/2071-1050/8/6/581 |
| article html file updated | 5 May 2019 12:21 CEST | Update | - |
| article html file updated | 27 March 2019 08:01 CET | Update | - |
| article html file updated | 29 June 2016 05:40 CEST | Update | - |
| article html file updated | 21 June 2016 10:01 CEST | Original file | - |
| article xml uploaded. | 21 June 2016 10:00 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/581/xml |
| article pdf uploaded. | 21 June 2016 10:00 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/581/pdf |
