| article html file updated | 30 August 2025 05:47 CEST | Update | https://www.mdpi.com/2199-8531/4/3/31 |
| article html file updated | 17 July 2022 00:17 CEST | Update | N/A |
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| article html file updated | 3 August 2018 09:26 CEST | Original file | N/A |
| article pdf uploaded. | 3 August 2018 09:24 CEST | Version of Record | https://www.mdpi.com/2199-8531/4/3/31/pdf |
| article xml uploaded. | 3 August 2018 09:24 CEST | Update | https://www.mdpi.com/2199-8531/4/3/31/xml |
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