| article html file updated | 30 August 2025 21:16 CEST | Update | https://www.mdpi.com/2223-7747/8/6/178 |
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| article pdf uploaded. | 24 June 2019 12:37 CEST | Updated version of record | https://www.mdpi.com/2223-7747/8/6/178/pdf |
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| article pdf uploaded. | 17 June 2019 16:18 CEST | Version of Record | https://www.mdpi.com/2223-7747/8/6/178/pdf-vor |
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