| article html file updated | 18 August 2026 06:50 CEST | Update | https://www.mdpi.com/2226-471X/5/4/44 |
| article html file updated | 24 December 2025 22:40 CET | Update | N/A |
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| article html file updated | 26 October 2020 14:22 CET | Original file | N/A |
| article pdf uploaded. | 26 October 2020 14:21 CET | Version of Record | https://www.mdpi.com/2226-471X/5/4/44/pdf |
| article xml uploaded. | 26 October 2020 14:21 CET | Update | https://www.mdpi.com/2226-471X/5/4/44/xml |
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