| article html file updated | 31 August 2025 07:55 CEST | Update | https://www.mdpi.com/2227-9717/8/1/41 |
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| article pdf uploaded. | 7 January 2020 05:28 CET | Updated version of record | https://www.mdpi.com/2227-9717/8/1/41/pdf |
| article xml uploaded. | 7 January 2020 05:28 CET | Update | https://www.mdpi.com/2227-9717/8/1/41/xml |
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| article pdf uploaded. | 1 January 2020 07:05 CET | Version of Record | https://www.mdpi.com/2227-9717/8/1/41/pdf-vor |
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