| article html file updated | 29 August 2025 22:35 CEST | Update | https://www.mdpi.com/2072-6643/8/1/39 |
| article html file updated | 16 July 2022 01:36 CEST | Update | N/A |
| article html file updated | 7 February 2020 03:22 CET | Update | N/A |
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| article pdf uploaded. | 13 January 2016 11:08 CET | Version of Record | https://www.mdpi.com/2072-6643/8/1/39/pdf |
| article xml uploaded. | 13 January 2016 11:08 CET | Original file | https://www.mdpi.com/2072-6643/8/1/39/xml |
