| article html file updated | 31 August 2025 07:09 CEST | Update | https://www.mdpi.com/1424-8220/20/1/69 |
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| article pdf uploaded. | 21 December 2019 08:18 CET | Version of Record | https://www.mdpi.com/1424-8220/20/1/69/pdf |
| article xml uploaded. | 21 December 2019 08:18 CET | Update | https://www.mdpi.com/1424-8220/20/1/69/xml |
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