| article html file updated | 12 August 2026 20:11 CEST | Update | https://www.mdpi.com/1996-1944/6/9/3840 |
| article html file updated | 29 August 2025 20:46 CEST | Update | N/A |
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| article html file updated | 14 March 2017 10:48 CET | Original file | N/A |
| article pdf uploaded. | 9 September 2013 16:20 CEST | Updated version of record | https://www.mdpi.com/1996-1944/6/9/3840/pdf |
| article pdf uploaded. | 6 September 2013 15:36 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/9/3840/pdf-vor |
