| article html file updated | 31 August 2025 04:14 CEST | Update | https://www.mdpi.com/2073-4395/9/11/721 |
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| article pdf uploaded. | 19 November 2019 10:57 CET | Updated version of record | https://www.mdpi.com/2073-4395/9/11/721/pdf |
| article xml uploaded. | 19 November 2019 10:57 CET | Update | https://www.mdpi.com/2073-4395/9/11/721/xml |
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| article pdf uploaded. | 7 November 2019 10:45 CET | Version of Record | https://www.mdpi.com/2073-4395/9/11/721/pdf-vor |
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