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| article html file updated | 19 July 2022 19:50 CEST | Update | - |
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| article pdf uploaded. | 22 January 2020 04:13 CET | Updated version of record | https://www.mdpi.com/2304-8158/9/1/69/pdf |
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| article html file updated | 21 January 2020 11:13 CET | Original file | - |
| article pdf uploaded. | 21 January 2020 11:09 CET | Updated version of record | https://www.mdpi.com/2304-8158/9/1/69/pdf-vor |
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| article pdf uploaded. | 8 January 2020 14:02 CET | Version of Record | https://www.mdpi.com/2304-8158/9/1/69/pdf-vor |
| article xml file uploaded | 8 January 2020 14:02 CET | Original file | - |
