| article html file updated | 29 August 2025 22:28 CEST | Update | https://www.mdpi.com/2227-9067/2/4/439 |
| article html file updated | 16 July 2022 01:26 CEST | Update | N/A |
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| article pdf uploaded. | 15 December 2015 15:20 CET | Version of Record | https://www.mdpi.com/2227-9067/2/4/439/pdf |
