| article html file updated | 29 August 2025 21:37 CEST | Update | https://www.mdpi.com/2227-9032/3/2/172 |
| article html file updated | 16 July 2022 00:02 CEST | Update | N/A |
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| article html file updated | 21 August 2015 09:39 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2015 15:20 CEST | Version of Record | https://www.mdpi.com/2227-9032/3/2/172/pdf |
