| article html file updated | 31 August 2025 13:13 CEST | Update | https://www.mdpi.com/2227-9040/8/1/19 |
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| article pdf uploaded. | 22 March 2020 16:03 CET | Updated version of record | https://www.mdpi.com/2227-9040/8/1/19/pdf |
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| article pdf uploaded. | 2 March 2020 12:46 CET | Updated version of record | https://www.mdpi.com/2227-9040/8/1/19/pdf-vor |
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| article pdf uploaded. | 2 March 2020 12:45 CET | Version of Record | https://www.mdpi.com/2227-9040/8/1/19/pdf-vor |
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