| article html file updated | 30 August 2025 11:21 CEST | Update | https://www.mdpi.com/2227-9717/7/2/56 |
| article html file updated | 18 July 2022 00:47 CEST | Update | - |
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| article pdf uploaded. | 31 January 2019 13:33 CET | Updated version of record | https://www.mdpi.com/2227-9717/7/2/56/pdf |
| article xml uploaded. | 31 January 2019 13:33 CET | Update | https://www.mdpi.com/2227-9717/7/2/56/xml |
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| article pdf uploaded. | 22 January 2019 14:52 CET | Updated version of record | https://www.mdpi.com/2227-9717/7/2/56/pdf-vor |
| article pdf uploaded. | 22 January 2019 14:20 CET | Version of Record | https://www.mdpi.com/2227-9717/7/2/56/pdf-vor |
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