| article html file updated | 29 August 2025 21:29 CEST | Update | https://www.mdpi.com/1996-1073/8/2/921 |
| article html file updated | 15 July 2022 23:48 CEST | Update | N/A |
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| article html file updated | 21 August 2015 06:39 CEST | Original file | N/A |
| article pdf uploaded. | 28 January 2015 10:48 CET | Version of Record | https://www.mdpi.com/1996-1073/8/2/921/pdf |
