| article html file updated | 31 August 2025 13:08 CEST | Update | https://www.mdpi.com/2199-8531/6/1/15 |
| article html file updated | 20 July 2022 21:37 CEST | Update | - |
| article html file updated | 27 March 2020 05:36 CET | Original file | - |
| article pdf uploaded. | 27 March 2020 05:34 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/1/15/pdf |
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| article pdf uploaded. | 2 March 2020 09:28 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/1/15/pdf-vor |
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| article pdf uploaded. | 1 March 2020 09:37 CET | Version of Record | https://www.mdpi.com/2199-8531/6/1/15/pdf-vor |
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