| article html file updated | 29 August 2025 22:39 CEST | Update | https://www.mdpi.com/2075-1729/6/1/7 |
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| article html file updated | 29 March 2016 11:19 CEST | Original file | N/A |
| article pdf uploaded. | 29 January 2016 15:50 CET | Version of Record | https://www.mdpi.com/2075-1729/6/1/7/pdf |
| article xml uploaded. | 29 January 2016 15:50 CET | Original file | https://www.mdpi.com/2075-1729/6/1/7/xml |
