| article html file updated | 29 August 2025 21:02 CEST | Update | https://www.mdpi.com/2071-1050/6/4/2223 |
| article html file updated | 15 July 2022 22:59 CEST | Update | N/A |
| article html file updated | 6 February 2020 08:38 CET | Update | N/A |
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| article html file updated | 20 August 2015 03:23 CEST | Original file | N/A |
| article pdf uploaded. | 16 April 2014 09:19 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/4/2223/pdf |
