| article html file updated | 31 August 2025 05:52 CEST | Update | https://www.mdpi.com/2223-7747/8/12/574 |
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| article pdf uploaded. | 19 December 2019 07:34 CET | Updated version of record | https://www.mdpi.com/2223-7747/8/12/574/pdf |
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| article pdf uploaded. | 5 December 2019 16:49 CET | Version of Record | https://www.mdpi.com/2223-7747/8/12/574/pdf-vor |
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