| article html file updated | 31 August 2025 10:14 CEST | Update | https://www.mdpi.com/2304-8158/9/2/139 |
| article html file updated | 20 July 2022 18:45 CEST | Update | - |
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| article pdf uploaded. | 10 February 2020 08:15 CET | Updated version of record | https://www.mdpi.com/2304-8158/9/2/139/pdf |
| article xml uploaded. | 10 February 2020 08:15 CET | Update | https://www.mdpi.com/2304-8158/9/2/139/xml |
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| article pdf uploaded. | 30 January 2020 05:19 CET | Version of Record | https://www.mdpi.com/2304-8158/9/2/139/pdf-vor |
| article xml file uploaded | 30 January 2020 05:19 CET | Original file | - |
