| article html file updated | 31 August 2025 06:51 CEST | Update | https://www.mdpi.com/1996-1073/13/1/8 |
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| article pdf uploaded. | 26 December 2019 12:01 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/1/8/pdf |
| article xml uploaded. | 26 December 2019 12:01 CET | Update | https://www.mdpi.com/1996-1073/13/1/8/xml |
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