| article html file updated | 29 August 2025 22:43 CEST | Update | https://www.mdpi.com/2227-7080/4/1/6 |
| article html file updated | 16 July 2022 01:47 CEST | Update | N/A |
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| article pdf uploaded. | 18 February 2016 11:48 CET | Version of Record | https://www.mdpi.com/2227-7080/4/1/6/pdf |
| article xml uploaded. | 18 February 2016 11:48 CET | Original file | https://www.mdpi.com/2227-7080/4/1/6/xml |
