| article html file updated | 31 August 2025 04:03 CEST | Update | https://www.mdpi.com/2227-7072/7/4/67 |
| article html file updated | 20 July 2022 00:18 CEST | Update | - |
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| article pdf uploaded. | 4 November 2019 13:15 CET | Version of Record | https://www.mdpi.com/2227-7072/7/4/67/pdf |
| article xml uploaded. | 4 November 2019 13:15 CET | Update | https://www.mdpi.com/2227-7072/7/4/67/xml |
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