| article html file updated | 31 August 2025 02:26 CEST | Update | https://www.mdpi.com/2227-9067/6/10/108 |
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| article pdf uploaded. | 18 October 2019 13:34 CEST | Updated version of record | https://www.mdpi.com/2227-9067/6/10/108/pdf |
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| article pdf uploaded. | 4 October 2019 14:11 CEST | Version of Record | https://www.mdpi.com/2227-9067/6/10/108/pdf-vor |
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