| article html file updated | 30 August 2025 01:34 CEST | Update | https://www.mdpi.com/2571-5135/6/4/15 |
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| article pdf uploaded. | 1 November 2017 03:46 CET | Updated version of record | https://www.mdpi.com/2571-5135/6/4/15/pdf |
| article pdf uploaded. | 30 October 2017 16:10 CET | Version of Record | https://www.mdpi.com/2571-5135/6/4/15/pdf-vor |
