| article html file updated | 29 August 2025 22:43 CEST | Update | https://www.mdpi.com/1999-4915/8/2/52 |
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| article pdf uploaded. | 18 February 2016 12:05 CET | Version of Record | https://www.mdpi.com/1999-4915/8/2/52/pdf |
| article xml uploaded. | 18 February 2016 12:05 CET | Original file | https://www.mdpi.com/1999-4915/8/2/52/xml |
