| article html file updated | 29 August 2025 21:10 CEST | Update | https://www.mdpi.com/2071-1050/6/8/4706 |
| article html file updated | 15 July 2022 23:14 CEST | Update | - |
| article html file updated | 6 February 2020 11:00 CET | Update | - |
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| article html file updated | 21 March 2019 21:45 CET | Update | - |
| article html file updated | 20 August 2015 13:43 CEST | Original file | - |
| article pdf uploaded. | 29 July 2014 11:12 CEST | Updated version of record | https://www.mdpi.com/2071-1050/6/8/4706/pdf |
| article pdf uploaded. | 25 July 2014 11:15 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/8/4706/pdf-vor |
