| article html file updated | 31 August 2025 09:23 CEST | Update | https://www.mdpi.com/2227-7390/8/1/137 |
| article html file updated | 20 July 2022 17:54 CEST | Update | - |
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| article pdf uploaded. | 21 January 2020 04:19 CET | Updated version of record | https://www.mdpi.com/2227-7390/8/1/137/pdf |
| article xml uploaded. | 21 January 2020 04:19 CET | Update | https://www.mdpi.com/2227-7390/8/1/137/xml |
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| article html file updated | 19 January 2020 07:18 CET | Update | - |
| article pdf uploaded. | 19 January 2020 07:16 CET | Updated version of record | https://www.mdpi.com/2227-7390/8/1/137/pdf-vor |
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| article pdf uploaded. | 19 January 2020 07:06 CET | Version of Record | https://www.mdpi.com/2227-7390/8/1/137/pdf-vor |
| article xml uploaded. | 19 January 2020 07:06 CET | Update | - |
| article xml file uploaded | 19 January 2020 07:06 CET | Original file | - |