| article html file updated | 29 August 2025 20:40 CEST | Update | https://www.mdpi.com/2073-4360/5/2/751 |
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| article xml uploaded. | 25 July 2017 12:12 CEST | Original file | https://www.mdpi.com/2073-4360/5/2/751/xml |
| article pdf uploaded. | 13 June 2013 09:55 CEST | Version of Record | https://www.mdpi.com/2073-4360/5/2/751/pdf |
