| article html file updated | 29 August 2025 20:46 CEST | Update | https://www.mdpi.com/1996-1944/6/9/4011 |
| article html file updated | 15 July 2022 22:32 CEST | Update | - |
| article html file updated | 6 February 2020 04:19 CET | Update | - |
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| article html file updated | 3 March 2017 05:00 CET | Original file | - |
| article pdf uploaded. | 23 September 2013 14:31 CEST | Updated version of record | https://www.mdpi.com/1996-1944/6/9/4011/pdf |
| article pdf uploaded. | 11 September 2013 14:26 CEST | Version of Record | https://www.mdpi.com/1996-1944/6/9/4011/pdf-vor |
