| article html file updated | 24 December 2025 23:18 CET | Update | https://www.mdpi.com/2076-393X/8/4/681 |
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| article pdf uploaded. | 15 November 2020 03:40 CET | Updated version of record | https://www.mdpi.com/2076-393X/8/4/681/pdf |
| article xml uploaded. | 15 November 2020 03:40 CET | Update | https://www.mdpi.com/2076-393X/8/4/681/xml |
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| article pdf uploaded. | 13 November 2020 14:24 CET | Version of Record | https://www.mdpi.com/2076-393X/8/4/681/pdf-vor |
