| article html file updated | 17 August 2026 00:39 CEST | Update | https://www.mdpi.com/2227-9717/8/2/137 |
| article html file updated | 31 August 2025 09:37 CEST | Update | N/A |
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| article html file updated | 28 February 2020 13:32 CET | Original file | N/A |
| article pdf uploaded. | 28 February 2020 13:31 CET | Updated version of record | https://www.mdpi.com/2227-9717/8/2/137/pdf |
| article xml uploaded. | 28 February 2020 13:31 CET | Update | https://www.mdpi.com/2227-9717/8/2/137/xml |
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| article pdf uploaded. | 21 January 2020 15:38 CET | Version of Record | https://www.mdpi.com/2227-9717/8/2/137/pdf-vor |
| article xml file uploaded | 21 January 2020 15:38 CET | Original file | N/A |