| article html file updated | 30 August 2025 02:41 CEST | Update | https://www.mdpi.com/1424-8220/18/2/638 |
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| article xml uploaded. | 24 February 2018 09:27 CET | Original file | https://www.mdpi.com/1424-8220/18/2/638/xml |
| article pdf uploaded. | 24 February 2018 09:27 CET | Updated version of record | https://www.mdpi.com/1424-8220/18/2/638/pdf |
| article pdf uploaded. | 21 February 2018 17:23 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/638/pdf-vor |
