| article html file updated | 30 August 2025 14:09 CEST | Update | https://www.mdpi.com/1911-8074/12/2/67 |
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| article pdf uploaded. | 6 May 2019 11:33 CEST | Updated version of record | https://www.mdpi.com/1911-8074/12/2/67/pdf |
| article xml uploaded. | 6 May 2019 11:33 CEST | Update | https://www.mdpi.com/1911-8074/12/2/67/xml |
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| article pdf uploaded. | 18 April 2019 16:25 CEST | Version of Record | https://www.mdpi.com/1911-8074/12/2/67/pdf-vor |
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