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| article html file updated | 1 September 2025 16:37 CEST | Update | N/A |
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| article pdf uploaded. | 22 December 2020 09:51 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/199/pdf |
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| article pdf uploaded. | 22 December 2020 05:24 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/199/pdf-vor |
| article xml uploaded. | 22 December 2020 05:24 CET | Update | N/A |
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| article pdf uploaded. | 21 December 2020 15:12 CET | Version of Record | https://www.mdpi.com/2199-8531/6/4/199/pdf-vor |
